Percutaneous Trigger Finger Release

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PD3 G1 SNA found to correlate with pentavalent rotavirus vaccine efficacy

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Titers of postdose three G1 serum-neutralizing antibody (PD3 G1 SNA) appear to be the best correlate of protection for pentavalent rotavirus vaccine (RV5), reported G. Frank Liu, PhD, and his associates at Merck in Kenilworth, N.J.

The researchers discovered this by analyzing data from five clinical trials of RV5 at both the individual and aggregated population level. Also, by looking at immunogenicity measures and case status of individuals from phase 2 and 3 trials of RV5, they found that “higher PD3 G1 SNA titers are associated with lower odds of contracting any [rotavirus gastroenteritis].”

CDC/Dr. Erskine Palmer
In the phase 2 and 3 studies, better RV5 efficacy was linked to higher PD3 G1 SNA geometric mean titers (GMT) ratios and higher PD3 serum anti-RV IgA GMT ratios. In analyses of both individual- and population-level data, the PD3 G1 SNA titer correlated more closely with efficacy for RV5 than did serum anti-RV IgA, Dr. Liu and his associates concluded.

Read more at (Hum Vaccin Immunother. 2017. doi: 10.1080/21645515.2017.1356522).

cnellist@frontlinemedcom.com

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Titers of postdose three G1 serum-neutralizing antibody (PD3 G1 SNA) appear to be the best correlate of protection for pentavalent rotavirus vaccine (RV5), reported G. Frank Liu, PhD, and his associates at Merck in Kenilworth, N.J.

The researchers discovered this by analyzing data from five clinical trials of RV5 at both the individual and aggregated population level. Also, by looking at immunogenicity measures and case status of individuals from phase 2 and 3 trials of RV5, they found that “higher PD3 G1 SNA titers are associated with lower odds of contracting any [rotavirus gastroenteritis].”

CDC/Dr. Erskine Palmer
In the phase 2 and 3 studies, better RV5 efficacy was linked to higher PD3 G1 SNA geometric mean titers (GMT) ratios and higher PD3 serum anti-RV IgA GMT ratios. In analyses of both individual- and population-level data, the PD3 G1 SNA titer correlated more closely with efficacy for RV5 than did serum anti-RV IgA, Dr. Liu and his associates concluded.

Read more at (Hum Vaccin Immunother. 2017. doi: 10.1080/21645515.2017.1356522).

cnellist@frontlinemedcom.com

 

Titers of postdose three G1 serum-neutralizing antibody (PD3 G1 SNA) appear to be the best correlate of protection for pentavalent rotavirus vaccine (RV5), reported G. Frank Liu, PhD, and his associates at Merck in Kenilworth, N.J.

The researchers discovered this by analyzing data from five clinical trials of RV5 at both the individual and aggregated population level. Also, by looking at immunogenicity measures and case status of individuals from phase 2 and 3 trials of RV5, they found that “higher PD3 G1 SNA titers are associated with lower odds of contracting any [rotavirus gastroenteritis].”

CDC/Dr. Erskine Palmer
In the phase 2 and 3 studies, better RV5 efficacy was linked to higher PD3 G1 SNA geometric mean titers (GMT) ratios and higher PD3 serum anti-RV IgA GMT ratios. In analyses of both individual- and population-level data, the PD3 G1 SNA titer correlated more closely with efficacy for RV5 than did serum anti-RV IgA, Dr. Liu and his associates concluded.

Read more at (Hum Vaccin Immunother. 2017. doi: 10.1080/21645515.2017.1356522).

cnellist@frontlinemedcom.com

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FROM HUMAN VACCINES & IMMUNOTHERAPEUTICS

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Adenomyosis in the spotlight, but which sign is featured?

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Adenomyosis in the spotlight, but which sign is featured?
Can you identify which feature of adenomyosis is found on these ultrasound images?

A) Globular enlarged uterus INCORRECT
A homogeneously enlarged uterus in the absence of fibroids is characteristic of adenomyosis.1

Transvaginal pelvic ultrasound demonstrates a homogenously enlarged uterus (arrows) without evidence of a focal fibroid.

 
B) Cystic myometrial spaces INCORRECT
Myometrial cysts are dilated cystic glands or foci of hemorrhage within heterotopic endometrial tissue.2 They are often less than 5 mm in size but can be extensive and of variable sizes and can be differentiated from arcuate veins seen in the outer myometrium by the use of color Doppler.1,2

Transvaginal pelvic ultrasound on 2 different patients demonstrates well-defined anechoic cysts in the myometrium without vascular flow on color Doppler (long arrows).

 
C) Asymmetric myometrial thickening INCORRECT
The finding of asymmetric uterine wall thickening in adenomyosis is usually seen when there is focal disease and presents with wall thickening that demonstrates anteroposterior asymmetry.1

(A) Transvaginal pelvic ultrasound demonstrates asymmetric wall thickening of the posterior myometrium (long arrow). (B) Transvaginal pelvic ultrasound of a different patient demonstrates asymmetric wall thickening of the anterior myometrium (long arrow).

 
D) Indistinct endomyometrial interface INCORRECT
The heterotopic endometrial tissue invading the myometrium obscures the normal endometrial myometrial border with pseudo-widening of the endometrial echo resulting in poor definition of the endomyometrial junction.1,2

Transvaginal pelvic ultrasounds from 2 different patients demonstrate poor definition of the endomyometrial interface (short arrows) in addition to the globular appearance of the uterus (long arrows).

 
E) Myometrial linear striations CORRECT
A hyperplastic reaction to the infiltration of the heterotrophic endometrial glands into the myometrium results in radiating linear echogenic striations (sometimes referred to as the "venetian blinds" sign).1,2

Transvaginal pelvic ultrasound images demonstrate myometrial linear echogenic striations (long arrows) radiating from the anterior uterine wall.

References
  1. Sakhel A, Abuhamad A. Sonography of adenomyosis. J Ultrasound Med. 2012;31(5):805-808.
  2. Reinhold C, Tafazoli F, Mehio A, et al. Uterine adenomyosis: endovaginal US and MR imaging features with histopathologic correlation. Radiographics. 1999;19:S147-S160.
Author and Disclosure Information

Dr. Kanmaniraja is Assistant Professor and Chief, Division of Abdominal Imaging, Department of Radiology, University of Florida College of Medicine-Jacksonville.

Dr. Kaunitz is University of Florida Term Professor and Associate Chairman, Department of Obstetrics and Gynecology, University of Florida College of Medicine-Jacksonville. He is Medical Director and Director of Menopause and Gynecologic Ultrasound Services at UF Women's Health Specialists-Emerson. He also serves on the OBG Management Board of Editors.

The authors report no additional financial relationships relevant to this quiz.

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Dr. Kanmaniraja is Assistant Professor and Chief, Division of Abdominal Imaging, Department of Radiology, University of Florida College of Medicine-Jacksonville.

Dr. Kaunitz is University of Florida Term Professor and Associate Chairman, Department of Obstetrics and Gynecology, University of Florida College of Medicine-Jacksonville. He is Medical Director and Director of Menopause and Gynecologic Ultrasound Services at UF Women's Health Specialists-Emerson. He also serves on the OBG Management Board of Editors.

The authors report no additional financial relationships relevant to this quiz.

Author and Disclosure Information

Dr. Kanmaniraja is Assistant Professor and Chief, Division of Abdominal Imaging, Department of Radiology, University of Florida College of Medicine-Jacksonville.

Dr. Kaunitz is University of Florida Term Professor and Associate Chairman, Department of Obstetrics and Gynecology, University of Florida College of Medicine-Jacksonville. He is Medical Director and Director of Menopause and Gynecologic Ultrasound Services at UF Women's Health Specialists-Emerson. He also serves on the OBG Management Board of Editors.

The authors report no additional financial relationships relevant to this quiz.

Can you identify which feature of adenomyosis is found on these ultrasound images?
Can you identify which feature of adenomyosis is found on these ultrasound images?

A) Globular enlarged uterus INCORRECT
A homogeneously enlarged uterus in the absence of fibroids is characteristic of adenomyosis.1

Transvaginal pelvic ultrasound demonstrates a homogenously enlarged uterus (arrows) without evidence of a focal fibroid.

 
B) Cystic myometrial spaces INCORRECT
Myometrial cysts are dilated cystic glands or foci of hemorrhage within heterotopic endometrial tissue.2 They are often less than 5 mm in size but can be extensive and of variable sizes and can be differentiated from arcuate veins seen in the outer myometrium by the use of color Doppler.1,2

Transvaginal pelvic ultrasound on 2 different patients demonstrates well-defined anechoic cysts in the myometrium without vascular flow on color Doppler (long arrows).

 
C) Asymmetric myometrial thickening INCORRECT
The finding of asymmetric uterine wall thickening in adenomyosis is usually seen when there is focal disease and presents with wall thickening that demonstrates anteroposterior asymmetry.1

(A) Transvaginal pelvic ultrasound demonstrates asymmetric wall thickening of the posterior myometrium (long arrow). (B) Transvaginal pelvic ultrasound of a different patient demonstrates asymmetric wall thickening of the anterior myometrium (long arrow).

 
D) Indistinct endomyometrial interface INCORRECT
The heterotopic endometrial tissue invading the myometrium obscures the normal endometrial myometrial border with pseudo-widening of the endometrial echo resulting in poor definition of the endomyometrial junction.1,2

Transvaginal pelvic ultrasounds from 2 different patients demonstrate poor definition of the endomyometrial interface (short arrows) in addition to the globular appearance of the uterus (long arrows).

 
E) Myometrial linear striations CORRECT
A hyperplastic reaction to the infiltration of the heterotrophic endometrial glands into the myometrium results in radiating linear echogenic striations (sometimes referred to as the "venetian blinds" sign).1,2

Transvaginal pelvic ultrasound images demonstrate myometrial linear echogenic striations (long arrows) radiating from the anterior uterine wall.

A) Globular enlarged uterus INCORRECT
A homogeneously enlarged uterus in the absence of fibroids is characteristic of adenomyosis.1

Transvaginal pelvic ultrasound demonstrates a homogenously enlarged uterus (arrows) without evidence of a focal fibroid.

 
B) Cystic myometrial spaces INCORRECT
Myometrial cysts are dilated cystic glands or foci of hemorrhage within heterotopic endometrial tissue.2 They are often less than 5 mm in size but can be extensive and of variable sizes and can be differentiated from arcuate veins seen in the outer myometrium by the use of color Doppler.1,2

Transvaginal pelvic ultrasound on 2 different patients demonstrates well-defined anechoic cysts in the myometrium without vascular flow on color Doppler (long arrows).

 
C) Asymmetric myometrial thickening INCORRECT
The finding of asymmetric uterine wall thickening in adenomyosis is usually seen when there is focal disease and presents with wall thickening that demonstrates anteroposterior asymmetry.1

(A) Transvaginal pelvic ultrasound demonstrates asymmetric wall thickening of the posterior myometrium (long arrow). (B) Transvaginal pelvic ultrasound of a different patient demonstrates asymmetric wall thickening of the anterior myometrium (long arrow).

 
D) Indistinct endomyometrial interface INCORRECT
The heterotopic endometrial tissue invading the myometrium obscures the normal endometrial myometrial border with pseudo-widening of the endometrial echo resulting in poor definition of the endomyometrial junction.1,2

Transvaginal pelvic ultrasounds from 2 different patients demonstrate poor definition of the endomyometrial interface (short arrows) in addition to the globular appearance of the uterus (long arrows).

 
E) Myometrial linear striations CORRECT
A hyperplastic reaction to the infiltration of the heterotrophic endometrial glands into the myometrium results in radiating linear echogenic striations (sometimes referred to as the "venetian blinds" sign).1,2

Transvaginal pelvic ultrasound images demonstrate myometrial linear echogenic striations (long arrows) radiating from the anterior uterine wall.

References
  1. Sakhel A, Abuhamad A. Sonography of adenomyosis. J Ultrasound Med. 2012;31(5):805-808.
  2. Reinhold C, Tafazoli F, Mehio A, et al. Uterine adenomyosis: endovaginal US and MR imaging features with histopathologic correlation. Radiographics. 1999;19:S147-S160.
References
  1. Sakhel A, Abuhamad A. Sonography of adenomyosis. J Ultrasound Med. 2012;31(5):805-808.
  2. Reinhold C, Tafazoli F, Mehio A, et al. Uterine adenomyosis: endovaginal US and MR imaging features with histopathologic correlation. Radiographics. 1999;19:S147-S160.
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A 37-year-old woman with heavy menstrual bleeding and dysmenorrhea presents to her gynecologist. Physical exam suggests an enlarged uterus; the gynecologist orders pelvic ultrasonography.

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Real-world adverse events reported after bivalent MenB vaccination in college students

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Reported rates of side effects of a bivalent serogroup B meningococcal vaccine given to college students were lower or similar to those in clinical trials, said Theresa M. Fiorito, MD, of Brown University, Providence, R.I., and her associates.

In February 2015, two unlinked, culture-confirmed cases of Neisseria meningitidis serogroup B (MenB) disease occurred at a local college in Rhode Island, and a bivalent MenB vaccine subsequently was administered. After the first-dose vaccination clinic, a 94% coverage rate was achieved, and there were no other cases of MenB disease. Injection site pain occurred in 78% of 1,736 students after dose one, in 64% of 1,395 after dose two, and in 71% of 609 students after dose three.

Micah Young/istockphoto
Fatigue occurred in 35% of 1,707 students after dose one, in 31% of 1,395 after dose two, and in 39% of 609 students after dose three. Myalgia was a side effect in 47% of 1,726 students after dose one, in 37% of 1,395 after dose two, and in 16% of 609 students after dose three. Headache was an adverse event in 16% of 1,725 students after one dose, 11% of 1,395 after two doses, and 16% of 609 after three doses. Adverse events such as chills and fever occurred in 15% or fewer students after any of the three doses.

Serious adverse events, such as any allergic reaction; difficulty breathing; hives, welts, or a severe rash; and swelling of the face, mouth, or throat occurred in fewer than 5% of students after any of the three doses, the investigators reported.

“We found an overall lower rate of headache within our sample relative to the rates in reported clinical trials. The rates of injection site pain, fatigue, thermometer-confirmed fevers (100.4° F or higher), and chills were approximately similar in our study as in clinical trials. The rate of myalgia was higher for our sample than in clinical trials following the first and second doses of the vaccine, but similar after the third dose of vaccine,” Dr. Fiorito and her associates wrote.

Read more at (Pediatr Infect Dis J. 2017. doi: 10.1097/INF.0000000000001742).

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Reported rates of side effects of a bivalent serogroup B meningococcal vaccine given to college students were lower or similar to those in clinical trials, said Theresa M. Fiorito, MD, of Brown University, Providence, R.I., and her associates.

In February 2015, two unlinked, culture-confirmed cases of Neisseria meningitidis serogroup B (MenB) disease occurred at a local college in Rhode Island, and a bivalent MenB vaccine subsequently was administered. After the first-dose vaccination clinic, a 94% coverage rate was achieved, and there were no other cases of MenB disease. Injection site pain occurred in 78% of 1,736 students after dose one, in 64% of 1,395 after dose two, and in 71% of 609 students after dose three.

Micah Young/istockphoto
Fatigue occurred in 35% of 1,707 students after dose one, in 31% of 1,395 after dose two, and in 39% of 609 students after dose three. Myalgia was a side effect in 47% of 1,726 students after dose one, in 37% of 1,395 after dose two, and in 16% of 609 students after dose three. Headache was an adverse event in 16% of 1,725 students after one dose, 11% of 1,395 after two doses, and 16% of 609 after three doses. Adverse events such as chills and fever occurred in 15% or fewer students after any of the three doses.

Serious adverse events, such as any allergic reaction; difficulty breathing; hives, welts, or a severe rash; and swelling of the face, mouth, or throat occurred in fewer than 5% of students after any of the three doses, the investigators reported.

“We found an overall lower rate of headache within our sample relative to the rates in reported clinical trials. The rates of injection site pain, fatigue, thermometer-confirmed fevers (100.4° F or higher), and chills were approximately similar in our study as in clinical trials. The rate of myalgia was higher for our sample than in clinical trials following the first and second doses of the vaccine, but similar after the third dose of vaccine,” Dr. Fiorito and her associates wrote.

Read more at (Pediatr Infect Dis J. 2017. doi: 10.1097/INF.0000000000001742).

Reported rates of side effects of a bivalent serogroup B meningococcal vaccine given to college students were lower or similar to those in clinical trials, said Theresa M. Fiorito, MD, of Brown University, Providence, R.I., and her associates.

In February 2015, two unlinked, culture-confirmed cases of Neisseria meningitidis serogroup B (MenB) disease occurred at a local college in Rhode Island, and a bivalent MenB vaccine subsequently was administered. After the first-dose vaccination clinic, a 94% coverage rate was achieved, and there were no other cases of MenB disease. Injection site pain occurred in 78% of 1,736 students after dose one, in 64% of 1,395 after dose two, and in 71% of 609 students after dose three.

Micah Young/istockphoto
Fatigue occurred in 35% of 1,707 students after dose one, in 31% of 1,395 after dose two, and in 39% of 609 students after dose three. Myalgia was a side effect in 47% of 1,726 students after dose one, in 37% of 1,395 after dose two, and in 16% of 609 students after dose three. Headache was an adverse event in 16% of 1,725 students after one dose, 11% of 1,395 after two doses, and 16% of 609 after three doses. Adverse events such as chills and fever occurred in 15% or fewer students after any of the three doses.

Serious adverse events, such as any allergic reaction; difficulty breathing; hives, welts, or a severe rash; and swelling of the face, mouth, or throat occurred in fewer than 5% of students after any of the three doses, the investigators reported.

“We found an overall lower rate of headache within our sample relative to the rates in reported clinical trials. The rates of injection site pain, fatigue, thermometer-confirmed fevers (100.4° F or higher), and chills were approximately similar in our study as in clinical trials. The rate of myalgia was higher for our sample than in clinical trials following the first and second doses of the vaccine, but similar after the third dose of vaccine,” Dr. Fiorito and her associates wrote.

Read more at (Pediatr Infect Dis J. 2017. doi: 10.1097/INF.0000000000001742).

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FROM THE PEDIATRIC INFECTIOUS DISEASE JOURNAL

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Dr. Britt awarded NIH grant to develop strategies to address health care disparities

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L. D. Britt, MD, MPH, DSc(Hon), FACS, FCCM, FRCSEng(Hon), FRCSEd(Hon), FWACS(Hon), FRCSI(Hon), FCS(SA)(Hon), FRCSGlasg(Hon), Henry Ford Professor and Edward Brickhouse Chairman, department of surgery, Eastern Virginia Medical School, Norfolk, and a Past-President of the American College of Surgeons (ACS), was recently awarded a multimillion-dollar National Institutes of Health (NIH) research grant. The grant will be used to develop strategies to address health care disparities in the various surgical specialties. Specifically, the emphasis of this research is “to determine the specific measures of health care disparities in the various surgical specialties in order to develop targeted interventions to mitigate such disparities,” said Dr. Britt, principal investigator of the research project.

The NIH R01 grants are among the most competitive awards in scientific research. Dr. Britt’s research team comprises experts in the field who work in medical organizations and academic institutions, such as the ACS; Harvard Medical School, Boston, MA; and the University of California, Los Angeles.

Dr. Britt has dedicated his career to patient care and addressing the multifaceted disparities in health care, and he believes that this research grant is a pivotal step toward countering one of the greatest challenges facing this country. He is particularly thankful for the unwavering support of David B. Hoyt, MD, FACS, ACS Executive Director; the Board of Regents; and the ACS Committee on Health Care Disparities, which he chairs. Adil Haider, MD, MPH, FACS, professor and director of the Center for Surgery and Public Health, Harvard Medical School, serves as Vice-Chair of the committee.

“This is a big step for the American College of Surgeons,” Dr. Britt said. “With its 100-plus year history of using data to address quality of care in surgery, if the College, in collaboration with the NIH, can’t solve this problem, no one can.”

Dr. Britt added that he anticipates that the College’s efforts to address disparities in health care with the help of the NIH will serve as a template for other professional organizations so that all patients have access to the services they need, from primary care to obstetrics-gynecology, and from cardiology to psychiatry. “Dr. Hoyt and I hope this is the start of movement to address health care disparities in all specialties, but it starts with the College.”

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L. D. Britt, MD, MPH, DSc(Hon), FACS, FCCM, FRCSEng(Hon), FRCSEd(Hon), FWACS(Hon), FRCSI(Hon), FCS(SA)(Hon), FRCSGlasg(Hon), Henry Ford Professor and Edward Brickhouse Chairman, department of surgery, Eastern Virginia Medical School, Norfolk, and a Past-President of the American College of Surgeons (ACS), was recently awarded a multimillion-dollar National Institutes of Health (NIH) research grant. The grant will be used to develop strategies to address health care disparities in the various surgical specialties. Specifically, the emphasis of this research is “to determine the specific measures of health care disparities in the various surgical specialties in order to develop targeted interventions to mitigate such disparities,” said Dr. Britt, principal investigator of the research project.

The NIH R01 grants are among the most competitive awards in scientific research. Dr. Britt’s research team comprises experts in the field who work in medical organizations and academic institutions, such as the ACS; Harvard Medical School, Boston, MA; and the University of California, Los Angeles.

Dr. Britt has dedicated his career to patient care and addressing the multifaceted disparities in health care, and he believes that this research grant is a pivotal step toward countering one of the greatest challenges facing this country. He is particularly thankful for the unwavering support of David B. Hoyt, MD, FACS, ACS Executive Director; the Board of Regents; and the ACS Committee on Health Care Disparities, which he chairs. Adil Haider, MD, MPH, FACS, professor and director of the Center for Surgery and Public Health, Harvard Medical School, serves as Vice-Chair of the committee.

“This is a big step for the American College of Surgeons,” Dr. Britt said. “With its 100-plus year history of using data to address quality of care in surgery, if the College, in collaboration with the NIH, can’t solve this problem, no one can.”

Dr. Britt added that he anticipates that the College’s efforts to address disparities in health care with the help of the NIH will serve as a template for other professional organizations so that all patients have access to the services they need, from primary care to obstetrics-gynecology, and from cardiology to psychiatry. “Dr. Hoyt and I hope this is the start of movement to address health care disparities in all specialties, but it starts with the College.”

 

L. D. Britt, MD, MPH, DSc(Hon), FACS, FCCM, FRCSEng(Hon), FRCSEd(Hon), FWACS(Hon), FRCSI(Hon), FCS(SA)(Hon), FRCSGlasg(Hon), Henry Ford Professor and Edward Brickhouse Chairman, department of surgery, Eastern Virginia Medical School, Norfolk, and a Past-President of the American College of Surgeons (ACS), was recently awarded a multimillion-dollar National Institutes of Health (NIH) research grant. The grant will be used to develop strategies to address health care disparities in the various surgical specialties. Specifically, the emphasis of this research is “to determine the specific measures of health care disparities in the various surgical specialties in order to develop targeted interventions to mitigate such disparities,” said Dr. Britt, principal investigator of the research project.

The NIH R01 grants are among the most competitive awards in scientific research. Dr. Britt’s research team comprises experts in the field who work in medical organizations and academic institutions, such as the ACS; Harvard Medical School, Boston, MA; and the University of California, Los Angeles.

Dr. Britt has dedicated his career to patient care and addressing the multifaceted disparities in health care, and he believes that this research grant is a pivotal step toward countering one of the greatest challenges facing this country. He is particularly thankful for the unwavering support of David B. Hoyt, MD, FACS, ACS Executive Director; the Board of Regents; and the ACS Committee on Health Care Disparities, which he chairs. Adil Haider, MD, MPH, FACS, professor and director of the Center for Surgery and Public Health, Harvard Medical School, serves as Vice-Chair of the committee.

“This is a big step for the American College of Surgeons,” Dr. Britt said. “With its 100-plus year history of using data to address quality of care in surgery, if the College, in collaboration with the NIH, can’t solve this problem, no one can.”

Dr. Britt added that he anticipates that the College’s efforts to address disparities in health care with the help of the NIH will serve as a template for other professional organizations so that all patients have access to the services they need, from primary care to obstetrics-gynecology, and from cardiology to psychiatry. “Dr. Hoyt and I hope this is the start of movement to address health care disparities in all specialties, but it starts with the College.”

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FDA approves second adalimumab biosimilar for multiple conditions

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The Food and Drug Administration has approved Cyltezo (adalimumab-adbm) for multiple conditions.

Cyltezo is an injectable tumor necrosis factor blocker, and is a biosimilar to adalimumab (Humira). The drug is indicated to treat moderate to severe active rheumatoid arthritis, active psoriatic arthritis, active ankylosing spondylitis, moderate to severe active Crohn’s disease, moderate to severe active ulcerative colitis, moderately to severely active polyarticular juvenile idiopathic arthritis in patients 4 years of age and older, and moderate to severe plaque psoriasis.

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The most common side effects are injection site infections, infection, rash, and headache. There is an increased risk of serious infection and malignancies such as lymphoma, and patients with active infections should not be started on Cyltezo.

Find the Cyltezo labeling information here.

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The Food and Drug Administration has approved Cyltezo (adalimumab-adbm) for multiple conditions.

Cyltezo is an injectable tumor necrosis factor blocker, and is a biosimilar to adalimumab (Humira). The drug is indicated to treat moderate to severe active rheumatoid arthritis, active psoriatic arthritis, active ankylosing spondylitis, moderate to severe active Crohn’s disease, moderate to severe active ulcerative colitis, moderately to severely active polyarticular juvenile idiopathic arthritis in patients 4 years of age and older, and moderate to severe plaque psoriasis.

Purple FDA logo.
The most common side effects are injection site infections, infection, rash, and headache. There is an increased risk of serious infection and malignancies such as lymphoma, and patients with active infections should not be started on Cyltezo.

Find the Cyltezo labeling information here.

 

The Food and Drug Administration has approved Cyltezo (adalimumab-adbm) for multiple conditions.

Cyltezo is an injectable tumor necrosis factor blocker, and is a biosimilar to adalimumab (Humira). The drug is indicated to treat moderate to severe active rheumatoid arthritis, active psoriatic arthritis, active ankylosing spondylitis, moderate to severe active Crohn’s disease, moderate to severe active ulcerative colitis, moderately to severely active polyarticular juvenile idiopathic arthritis in patients 4 years of age and older, and moderate to severe plaque psoriasis.

Purple FDA logo.
The most common side effects are injection site infections, infection, rash, and headache. There is an increased risk of serious infection and malignancies such as lymphoma, and patients with active infections should not be started on Cyltezo.

Find the Cyltezo labeling information here.

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Pembrolizumab showed ‘promising’ antitumor activity in small-cell lung cancer

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Pembrolizumab monotherapy showed durable antitumor activity in extensive-stage small-cell lung cancer, and its safety profile resembled that in other tumor types, based on the results of the phase 1b KEYNOTE-028 study of 24 patients.

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Pembrolizumab monotherapy showed durable antitumor activity in extensive-stage small-cell lung cancer, and its safety profile resembled that in other tumor types, based on the results of the phase 1b KEYNOTE-028 study of 24 patients.

 

Pembrolizumab monotherapy showed durable antitumor activity in extensive-stage small-cell lung cancer, and its safety profile resembled that in other tumor types, based on the results of the phase 1b KEYNOTE-028 study of 24 patients.

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Key clinical point: Pembrolizumab showed antitumor activity and was usually safe for treating extensive-stage small cell lung cancer.

Major finding: The objective response rate was 33%. Two patients developed grade 3 or worse treatment-related adverse events, which included fatal mesenteric ischemia and colitis.

Data source: A phase 1b open-label trial of 24 patients with PD-L1–positive extensive-stage small cell lung cancer.

Disclosures: Merck funded the study. Dr. Ott disclosed research funding from Merck and several other pharmaceutical companies, and advisory or consulting relationships with several companies, excluding Merck.

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Comparison of Anterior and Posterior Cortico­steroid Injections for Pain Relief and Functional Improvement in Shoulder Impingement Syndrome

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Take-Home Points

  • When conservative treatments for SIS do not resolve symptoms, inflammation and pain can be reduced with use of subacromial CSI.

  • Both anterior CSI and posterior CSI significantly improved pain and function for up to 6 months

  • CSI combined with structured PT produced significant improvement in pain and function in patients with SIS, regardless of injection route used.

  • Clinical response to CSI may not depend on injection accuracy.

  • Clinicians should rely on their clinical acumen when selecting injection routes, as anterior and posterior are both beneficial.

Shoulder pain, a common clinical problem, occurs in 7% to 34% of the general population and in 21% of people older than 70 years.1Subacromial impingement refers to shoulder pain resulting from mechanical impingement of the rotator cuff underneath the coracoacromial arch between the acromion and the humeral head.2,3 Subacromial impingement syndrome (SIS) is the most common cause of shoulder pain, resulting in significant functional deficits and disability.3

Treatment options for SIS include conservative modalities such as use of nonsteroidal anti-inflammatory drugs, physical therapy (PT), and subacromial corticosteroid injections (CSIs). Studies have found short- and long-term improvement in pain, function, and range of motion after CSI.4-8 Subacromial CSI can be administered through an anterior or a posterior route.4,9 There have been several studies of the accuracy of anterior and posterior CSIs,10-12 with 2 studies finding similar accuracy for these routes.10,11 However, there may be a sex difference: In women, a posterior route may be less accurate than an anterior or a lateral route.12

Although the accuracy of anterior and posterior routes has been studied, their effect on clinical outcomes has not. We conducted a study to understand the effects of anterior and posterior CSIs on SIS. As one of the accuracy studies suggested anterior CSI is more accurate—the anterior route was theorized to provide easier access to the subacromial space12—we hypothesized patients treated with anterior CSI would have superior clinical outcomes 6 months after injection.12,13

Materials and Methods

Study Participants and Randomization

After this study received Institutional Review Board approval, patients with shoulder pain of more than 3 months’ duration and consistent with SIS were screened for inclusion. Eligible patients had pain in the anterior biceps and over the top of the shoulder with overhead activities as well as one or more clinical findings on physical examination: Hawkins-Kennedy sign, Neer sign, painful arc, and infraspinatus pain (pain with external rotation).

Patients were excluded if their history included prior subacromial CSI, adhesive capsulitis (inability to passively abduct shoulder to 90° with scapular stabilization), calcific tendonitis, radiographic evidence of os acromiale, cervical radiculopathy, Spurling sign, neck pain, radiating arm pain or numbness, sensory deficits, or neck and upper extremity motor dysfunction. Also excluded were patients with full-thickness rotator cuff tear, weakness on arm elevation, positive "drop arm sign," or high-riding humerus on standing shoulder radiograph. Patients who had work-related injuries or who were involved in worker compensation were excluded as well.

Enrolled patients were randomly assigned (with use of a computer-based random number generator) to receive either anterior CSI or posterior CSI.

Injection Procedures

All patients were administered 5 mL of lidocaine 1% (without epinephrine) and 2 mL (80 mg) of triamcinolone by 2 board-certified orthopedic surgeons using a 22-gauge 1½-inch needle. For patients who received their subacromial CSI by the anterior route, the arm was held in 0° of abduction and 20° of external rotation. The needle was inserted medial to the humeral head, lateral to the coracoid process, beginning 1 cm inferior to the clavicle with the needle directed posteriorly and laterally toward the acromion.10 For patients who received their CSI by the posterior route, the arm was held in 0° of abduction, the posterolateral corner of the acromion was identified by palpation, and the needle was inserted 1 cm inferior and medial to this point with the needle directed anteriorly and laterally toward the acromion.10,12 In both groups, the subacromial space was identified when a drop in pressure was felt during needle insertion. Accuracy was assessed post hoc by asking patients to grade their response to the injection on a visual analog scale (VAS); VAS score was used as a surrogate for improvement. All patients had a positive Neer test: Pain decreased with impingement maneuvers immediately after injection.

All patients were referred for PT provided according to an evidence-based rehabilitation protocol.14 This program emphasized range of motion with shoulder shrugs, scapular retraction, and pendulum exercises; flexibility with stretching exercises targeting the anterior and posterior aspects of the shoulder and cane stretching for forward elevation and external rotation; and strength with strengthening exercises involving the rotator cuff and scapular stabilizers.

Outcome Measures

Pain was measured with VAS scores and function with Single Assessment Numeric Evaluation (SANE) scores. The VAS is a validated outcome measure of pain intensity. A numeric version of the VAS was used: Patients selected the whole number, from 0 (no pain) to 10 (worst possible pain), that best reflected their pain intensity. On SANE, another validated outcome measure, patients rated their shoulder function as a percentage of normal, from 0% (no function possible) to 100% (perfect).15 Before injection, all patients were administered the VAS and SANE questionnaires to establish their baseline pain level and opinion of shoulder function. These measures were repeated 1, 3, and 6 months after injection. Telephone interviews were conducted at 1 month and 6 months. Patients were asked to return to clinic 3 months after injection as part of the standard of care. At 3 months, 47 (86%) of the 55 patients returned for follow-up and were administered the VAS and SANE questionnaires; the other 8 completed the questionnaires by telephone. At each time point, patients were asked to report on their participation in PT and/or adherence to their home exercise program.

Statistical Analysis

Power analysis performed with Student t test and a 2-sided level of P = .05 compared VAS pain scores between the anterior and posterior injection routes and found a mean (SD) difference of 1.4 (1.7).16 Power calculations made with nQuery Advisor Version 7.0 (Statistical Solutions) indicated a total sample size of 60 patients (30/group) would provide 80% power for detecting a significant difference assuming a 20% dropout rate.

Two-way mixed-model analysis of variance (ANOVA) was used to compare the anterior and posterior routes for statistical differences in both VAS pain scores and SANE function scores at baseline and 1, 3, and 6 months after injection. Likewise, time at baseline (just before injection)was compared with follow-up (1, 3, 6 months) with 2-way mixed-model ANOVA adjusting for anterior or posterior route. Multivariate analysis was performed to evaluate differences between baseline and 6-month follow-up with respect to anterior and posterior injection routes, controlling for age, sex, and body mass index (BMI) for VAS and SANE scores. Parametric testing methods were used for statistical analysis, which was performed with IBM SPSS Statistics Version 21.0 (IBM Corp). Significance was set at P < .05.

Results

Patient Characteristics

Of the 55 patients enrolled, 25 (46%) received anterior subacromial CSI and 30 (54%) received posterior CSI. All enrolled patients had a positive Neer impingement test immediately after injection. Mean (SD) age was 48 (9.3) years for anterior group patients and 48 (9.0) years for posterior group patients. There was no significant difference in age or BMI between the 2 groups (Table).

Table.

Five patients (9%) were excluded from the study after randomization and CSI: 2 for a full-thickness rotator cuff tear, 1 for a Bankart lesion, 1 for adhesive capsulitis, and 1 for a worker compensation claim.

One month after injection, 41 patients (75%) reported having engaged in PT as prescribed. Of the 47 patients (86%) who returned for the 3-month follow-up, 25 (46%) reported having engaged in PT between 1 month and 3 months after injection. Fourteen patients (26%) reported attending PT between 3 and 6 months post-injection.

Outcome Measures

Two-way repeated-measures ANOVA with age, sex, and BMI included as covariates revealed no significant differences in VAS scores between the anterior and posterior groups at any time point (P = .45). Both groups had highly significant pain reductions (anterior, F = 9.71, P < .001; posterior, F = 13.46, P < .001). Figure 1 shows mean VAS scores and significant reductions in pain 1, 3, and 6 months after injection (see asterisks for anterior and posterior groups; P < .001 for all). The groups had parallel rates of pain reduction over time, as indicated by a nonsignificant (P = .50) difference in slopes. These pain score reductions were significant for both injection routes and were independent of age, sex, and BMI (P > .05 for all).

Figure 1.

Two-way repeated-measures ANOVA with age, sex, and BMI included as covariates revealed no significant differences in SANE scores between the anterior and posterior groups, except for a higher mean score in the anterior group at 3 months
(P = .02). There were no other group differences (P > .10 for all). Both groups had highly significant improvements in function (anterior, F = 17.34,
P < .001; posterior, F = 13.57, P < .001). Figure 2 shows mean SANE scores and significant improvement at 1, 3, and 6 months (see asterisks for anterior and posterior groups; P < .001 for all). The groups had parallel rates of improved function over time, as indicated by a nonsignificant (P = .51) difference in slopes. These function score improvements were significant for both injection routes and were independent of age, sex, and BMI (P > .05 for all).

Figure 2.

From the results of this prospective randomized study, we concluded subacromial CSI significantly reduces pain and improves function regardless of route used. In addition, age, sex, and BMI do not significantly affect the efficacy of either anterior CSI or posterior CSI.

Discussion

In patients with SIS, anterior CSI and posterior CSI provided significant improvements in pain and function 1, 3, and 6 months after injection. These effects were independent of age, sex, BMI, and PT participation. There were no significant differences in outcomes between injection routes.

When conservative treatments for SIS do not resolve symptoms, inflammation and pain can be reduced with use of subacromial CSI.4-8 Although clinical outcomes are inconsistent, CSI can be used to address SIS symptoms in appropriate patients. Specifically, Blair and colleagues6 found that, CSI consisting of 4 mL of lidocaine 1% (without epinephrine) and 2 mL (80 mg) of triamcinolone was effective in alleviating shoulder pain and improving shoulder range of motion. Other authors have similarly reported improved outcomes after subacromial injection and short-term follow-up with PT.4,7,8 Our findings are consistent with these reports: CSI coupled with a structured rehabilitation program is effective in alleviating symptoms associated with acute or subacute SIS.

Numerous studies have found improved clinical outcomes after anterior CSI and after posterior CSI,6-8 but no study has directly compared the clinical impact of anterior CSI with that of posterior CSI—which suggests injection route may not affect ultimate clinical outcomes.

CSI accuracy has been studied extensively.10-12,17-20 Although 2 studies found similar accuracy for anterior and posterior routes,10,11 there may be a sex difference: In women, a posterior route may be less accurate than an anterior or a lateral route.12 Collectively, these studies expose the inherent difficulty in treating shoulder pain with localized subacromial injection. Therapy may fail because of errant needle positioning. Two prospective studies found improved clinical outcomes with successful delivery of medication into the subacromial space.17,18 Poor clinical outcomes may result from inaccurate CSI.

In contrast to other clinical studies, our study found that injection route was not associated with differences in clinical response. In a prospective randomized clinical trial in which 75 patients received a subacromial injection, Marder and colleagues12 found anterior routes 84% accurate and posterior routes 56% accurate; they concluded acromion anatomy and subacromial bursa anatomy make posterior injections more difficult. As theorized by Gruson and colleagues,13 with use of an anterior route, the needle enters inferior to the concavity of the acromion and provides easier access to the subacromial space. This idea is in line with Marder and colleagues’12 conclusion that subacromial bursa anatomy provides a favorable environment for accurate CSI.

If accuracy is positively correlated with clinical improvement and anterior routes are more accurate, there should be a difference in response to posterior injections. Our results provide evidence that clinical response to CSI may not depend on injection accuracy. Perhaps merely placing the corticosteroid near the bursa is adequate for improving symptoms or perhaps some of the clinical improvement is due to the systemic effect of corticosteroids. These possibilities require further analysis.

Establishing the efficacy of CSI in SIS is difficult. The literature includes various study designs, different CSI indications and medication formulations, and varying emphasis on the role of organized PT. Rehabilitation has been found to alleviate joint pain by reducing inflammation,14 but data do not universally support this finding.21,22 Nevertheless, use of PT might explain the divergence in clinical outcomes reported by Marder and colleagues,12 who found anterior CSI more accurate than posterior CSI. In our practice, PT is recommended for all SIS patients, not only those who have CSI. Thus, our findings are framed within the context of successful CSI but may include patients who improved with PT alone. This issue raises the question of whether subacromial CSI should be guided by ultrasound. Ultrasound guidance can improve CSI accuracy and clinical outcomes,23-25 though the value of this benefit is debated.26

This study had several limitations. First, pain relief was patient reported. Second, the treatment plan involved CSI with PT but did not control for CSI used alone. PT, which is part of the standard of care for patients with SIS, added another degree of complexity to the study. Third, there may have been some variability in SIS severity (stage 1, 2, or 3). Fourth, although the study design controlled for various shoulder pathologies, advanced imaging, which could have provided diagnosis confirmation, was not available for all patients. Therefore, concurrent conditions may have confounded results. However, randomization was used to try to minimize this effect. Fifth, although injection routes were randomly assigned, the trial was not blinded. Sixth, the study was underpowered by 1 patient, as there was an estimated 20% dropout rate over 3 and 6 months of follow-up. However, we do not think our results were significantly affected.

Although more research is needed to fully describe the role of subacromial CSI in SIS, our study findings suggested that CSI using either an anterior or a posterior route creates a window of symptomatic relief in which patients may be able to engage in PT.

Conclusion

Both anterior CSI and posterior CSI significantly improved pain and function for up to 6 months. No differences were found between anterior and posterior CSIs. In the context of this study, CSI combined with structured PT produced significant improvement in pain and function in patients with SIS, regardless of injection route used. Clinicians should rely on their clinical acumen when selecting injection routes, as anterior and posterior are both beneficial.

References

1. Buchbinder R, Green S, Youd JM. Corticosteroid injections for shoulder pain. Cochrane Database Syst Rev. 2003;(1):CD004016.

2. Bell AD, Conaway D. Corticosteroid injections for painful shoulders. Int J Clin Pract. 2005;59(10):1178-1186.

3. Michener LA, McClure PW, Karduna AR. Anatomical and biomechanical mechanisms of subacromial impingement syndrome. Clin Biomech. 2003;18(5):369-379.

4. Akgün K, Birtane M, Akarirmak U. Is local subacromial corticosteroid injection beneficial in subacromial impingement syndrome? Clin Rheumatol. 2004;23(6):496-500.

5. Bhagra A, Syed H, Reed DA, et al. Efficacy of musculoskeletal injections by primary care providers in the office: a retrospective cohort study. Int J Gen Med. 2013;6:237-243.

6. Blair B, Rokito AS, Cuomo F, Jarolem K, Zuckerman JD. Efficacy of injections of corticosteroids for subacromial impingement syndrome. J Bone Joint Surg Am. 1996;78(11):1685-1689.

7. Cummins CA, Sasso LM, Nicholson D. Impingement syndrome: temporal outcomes of nonoperative treatment.
J Shoulder Elbow Surg. 2009;18(2):172-177.

8. Yu C, Chen CH, Liu HT, Dai MH, Wang IC, Wang KC. Subacromial injections of corticosteroids and Xylocaine for painful subacromial impingement syndrome. Chang Gung Med J. 2006;29(5):474-478.

9. Codsi MJ. The painful shoulder: when to inject and when to refer. Cleve Clin J Med. 2007;74(7):473-474, 477-478, 480-482 passim.

10. Henkus HE, Cobben LP, Coerkamp EG, Nelissen RG, van Arkel ER. The accuracy of subacromial injections: a prospective randomized magnetic resonance imaging study. Arthroscopy. 2006;22(3):277-282.

11. Kang MN, Rizio L, Prybicien M, Middlemas DA, Blacksin MF. The accuracy of subacromial corticosteroid injections: a comparison of multiple methods. J Shoulder Elbow Surg. 2008;17(15):61S-66S.

12. Marder RA, Kim SH, Labson JD, Hunter JC. Injection of the subacromial bursa in patients with rotator cuff syndrome: a prospective, randomized study comparing the effectiveness of different routes. J Bone Joint Surg Am. 2012;94(16):
1442-1447.

13. Gruson, KI, Ruchelsman DE, Zuckerman JD. Subacromial corticosteroid injections. J Shoulder Elbow Surg. 2008;17(1 suppl):118S-130S.

14. Kuhn JE. Exercise in the treatment of rotator cuff impingement: a systematic review and a synthesized evidence-based rehabilitation protocol. J Shoulder Elbow Surg. 2009;18(1):138-160.

15. Williams GN, Gangel TJ, Arciero RA, Uhorchak JM, Taylor DC. Comparison of the Single Assessment Numeric Evaluation method and two shoulder rating scales. Outcomes measures after shoulder surgery. Am J Sports Med. 1999;27(2):214-221.

16. Tashjian RZ, Deloach J, Porucznik CA, Powell AP. Minimal clinically important differences (MCID) and patient acceptable symptomatic state (PASS) for visual analog scales (VAS) measuring pain in patients treated for rotator cuff disease.
J Shoulder Elbow Surg. 2009;88(6):927-932.

17. Eustace JA, Brophy DP, Gibney RP, Bresnihan B, FitzGerald O. Comparison of the accuracy of steroid placement with clinical outcome in patients with shoulder symptoms. Ann Rheum Dis. 1997;56(1):59-63.

18. Esenyel CZ, Esenyel M, Yeiltepe R, et al. The correlation between the accuracy of steroid injections and subsequent shoulder pain and function in subacromial impingement
syndrome [in Turkish]. Acta Orthop Traumatol Turc. 2003;37(1):
41-45.

19. Powell SE, Davis SM, Lee EH, et al. Accuracy of palpation-directed intra-articular glenohumeral injection confirmed by magnetic resonance arthrography. Arthroscopy. 2015;31(2):205-208.

20. Rutten MJ, Maresch BJ, Jager GJ, de Waal Malefijt MC. Injection of the subacromial-subdeltoid bursa: blind or ultrasound-guided? Acta Orthop. 2007;78(2):254-257.

21. Desmeules F, Côté CH, Frémont P. Therapeutic exercise and orthopedic manual therapy for impingement syndrome: a systematic review. Clin J Sport Med. 2003;13(3):176-182.

22. Winters JC, Sobel JS, Groenier KH, Arendzen HJ, Meyboom-de Jong B. Comparison of physiotherapy, manipulation, and corticosteroid injection for treating shoulder complaints in general practice: randomised, single blind study. BMJ. 1997;314(7090):1320-1325.

23. Chen MJ, Lew HL, Hsu TC, et al. Ultrasound-guided shoulder injections in the treatment of subacromial bursitis. Am J Phys Med Rehabil. 2006;85(1):31-35.

24. Hsieh LF, Hsu WC, Lin YJ, Wu SH, Chang KC, Chang HL. Is ultrasound-guided injection more effective in chronic subacromial bursitis? Med Sci Sports Exerc. 2013;45(12):
2205-2213.

25. Naredo E, Cabero F, Beneyto P, et al. A randomized comparative study of short term response to blind injection versus sonographic-guided injection of local corticosteroids in patients with painful shoulder. J Rheumatol. 2004;31(2):308-314.

26. Hall S, Buchbinder R. Do imaging methods that guide needle placement improve outcome? Ann Rheum Dis. 2004;63(9):1007-1008.

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Take-Home Points

  • When conservative treatments for SIS do not resolve symptoms, inflammation and pain can be reduced with use of subacromial CSI.

  • Both anterior CSI and posterior CSI significantly improved pain and function for up to 6 months

  • CSI combined with structured PT produced significant improvement in pain and function in patients with SIS, regardless of injection route used.

  • Clinical response to CSI may not depend on injection accuracy.

  • Clinicians should rely on their clinical acumen when selecting injection routes, as anterior and posterior are both beneficial.

Shoulder pain, a common clinical problem, occurs in 7% to 34% of the general population and in 21% of people older than 70 years.1Subacromial impingement refers to shoulder pain resulting from mechanical impingement of the rotator cuff underneath the coracoacromial arch between the acromion and the humeral head.2,3 Subacromial impingement syndrome (SIS) is the most common cause of shoulder pain, resulting in significant functional deficits and disability.3

Treatment options for SIS include conservative modalities such as use of nonsteroidal anti-inflammatory drugs, physical therapy (PT), and subacromial corticosteroid injections (CSIs). Studies have found short- and long-term improvement in pain, function, and range of motion after CSI.4-8 Subacromial CSI can be administered through an anterior or a posterior route.4,9 There have been several studies of the accuracy of anterior and posterior CSIs,10-12 with 2 studies finding similar accuracy for these routes.10,11 However, there may be a sex difference: In women, a posterior route may be less accurate than an anterior or a lateral route.12

Although the accuracy of anterior and posterior routes has been studied, their effect on clinical outcomes has not. We conducted a study to understand the effects of anterior and posterior CSIs on SIS. As one of the accuracy studies suggested anterior CSI is more accurate—the anterior route was theorized to provide easier access to the subacromial space12—we hypothesized patients treated with anterior CSI would have superior clinical outcomes 6 months after injection.12,13

Materials and Methods

Study Participants and Randomization

After this study received Institutional Review Board approval, patients with shoulder pain of more than 3 months’ duration and consistent with SIS were screened for inclusion. Eligible patients had pain in the anterior biceps and over the top of the shoulder with overhead activities as well as one or more clinical findings on physical examination: Hawkins-Kennedy sign, Neer sign, painful arc, and infraspinatus pain (pain with external rotation).

Patients were excluded if their history included prior subacromial CSI, adhesive capsulitis (inability to passively abduct shoulder to 90° with scapular stabilization), calcific tendonitis, radiographic evidence of os acromiale, cervical radiculopathy, Spurling sign, neck pain, radiating arm pain or numbness, sensory deficits, or neck and upper extremity motor dysfunction. Also excluded were patients with full-thickness rotator cuff tear, weakness on arm elevation, positive "drop arm sign," or high-riding humerus on standing shoulder radiograph. Patients who had work-related injuries or who were involved in worker compensation were excluded as well.

Enrolled patients were randomly assigned (with use of a computer-based random number generator) to receive either anterior CSI or posterior CSI.

Injection Procedures

All patients were administered 5 mL of lidocaine 1% (without epinephrine) and 2 mL (80 mg) of triamcinolone by 2 board-certified orthopedic surgeons using a 22-gauge 1½-inch needle. For patients who received their subacromial CSI by the anterior route, the arm was held in 0° of abduction and 20° of external rotation. The needle was inserted medial to the humeral head, lateral to the coracoid process, beginning 1 cm inferior to the clavicle with the needle directed posteriorly and laterally toward the acromion.10 For patients who received their CSI by the posterior route, the arm was held in 0° of abduction, the posterolateral corner of the acromion was identified by palpation, and the needle was inserted 1 cm inferior and medial to this point with the needle directed anteriorly and laterally toward the acromion.10,12 In both groups, the subacromial space was identified when a drop in pressure was felt during needle insertion. Accuracy was assessed post hoc by asking patients to grade their response to the injection on a visual analog scale (VAS); VAS score was used as a surrogate for improvement. All patients had a positive Neer test: Pain decreased with impingement maneuvers immediately after injection.

All patients were referred for PT provided according to an evidence-based rehabilitation protocol.14 This program emphasized range of motion with shoulder shrugs, scapular retraction, and pendulum exercises; flexibility with stretching exercises targeting the anterior and posterior aspects of the shoulder and cane stretching for forward elevation and external rotation; and strength with strengthening exercises involving the rotator cuff and scapular stabilizers.

Outcome Measures

Pain was measured with VAS scores and function with Single Assessment Numeric Evaluation (SANE) scores. The VAS is a validated outcome measure of pain intensity. A numeric version of the VAS was used: Patients selected the whole number, from 0 (no pain) to 10 (worst possible pain), that best reflected their pain intensity. On SANE, another validated outcome measure, patients rated their shoulder function as a percentage of normal, from 0% (no function possible) to 100% (perfect).15 Before injection, all patients were administered the VAS and SANE questionnaires to establish their baseline pain level and opinion of shoulder function. These measures were repeated 1, 3, and 6 months after injection. Telephone interviews were conducted at 1 month and 6 months. Patients were asked to return to clinic 3 months after injection as part of the standard of care. At 3 months, 47 (86%) of the 55 patients returned for follow-up and were administered the VAS and SANE questionnaires; the other 8 completed the questionnaires by telephone. At each time point, patients were asked to report on their participation in PT and/or adherence to their home exercise program.

Statistical Analysis

Power analysis performed with Student t test and a 2-sided level of P = .05 compared VAS pain scores between the anterior and posterior injection routes and found a mean (SD) difference of 1.4 (1.7).16 Power calculations made with nQuery Advisor Version 7.0 (Statistical Solutions) indicated a total sample size of 60 patients (30/group) would provide 80% power for detecting a significant difference assuming a 20% dropout rate.

Two-way mixed-model analysis of variance (ANOVA) was used to compare the anterior and posterior routes for statistical differences in both VAS pain scores and SANE function scores at baseline and 1, 3, and 6 months after injection. Likewise, time at baseline (just before injection)was compared with follow-up (1, 3, 6 months) with 2-way mixed-model ANOVA adjusting for anterior or posterior route. Multivariate analysis was performed to evaluate differences between baseline and 6-month follow-up with respect to anterior and posterior injection routes, controlling for age, sex, and body mass index (BMI) for VAS and SANE scores. Parametric testing methods were used for statistical analysis, which was performed with IBM SPSS Statistics Version 21.0 (IBM Corp). Significance was set at P < .05.

Results

Patient Characteristics

Of the 55 patients enrolled, 25 (46%) received anterior subacromial CSI and 30 (54%) received posterior CSI. All enrolled patients had a positive Neer impingement test immediately after injection. Mean (SD) age was 48 (9.3) years for anterior group patients and 48 (9.0) years for posterior group patients. There was no significant difference in age or BMI between the 2 groups (Table).

Table.

Five patients (9%) were excluded from the study after randomization and CSI: 2 for a full-thickness rotator cuff tear, 1 for a Bankart lesion, 1 for adhesive capsulitis, and 1 for a worker compensation claim.

One month after injection, 41 patients (75%) reported having engaged in PT as prescribed. Of the 47 patients (86%) who returned for the 3-month follow-up, 25 (46%) reported having engaged in PT between 1 month and 3 months after injection. Fourteen patients (26%) reported attending PT between 3 and 6 months post-injection.

Outcome Measures

Two-way repeated-measures ANOVA with age, sex, and BMI included as covariates revealed no significant differences in VAS scores between the anterior and posterior groups at any time point (P = .45). Both groups had highly significant pain reductions (anterior, F = 9.71, P < .001; posterior, F = 13.46, P < .001). Figure 1 shows mean VAS scores and significant reductions in pain 1, 3, and 6 months after injection (see asterisks for anterior and posterior groups; P < .001 for all). The groups had parallel rates of pain reduction over time, as indicated by a nonsignificant (P = .50) difference in slopes. These pain score reductions were significant for both injection routes and were independent of age, sex, and BMI (P > .05 for all).

Figure 1.

Two-way repeated-measures ANOVA with age, sex, and BMI included as covariates revealed no significant differences in SANE scores between the anterior and posterior groups, except for a higher mean score in the anterior group at 3 months
(P = .02). There were no other group differences (P > .10 for all). Both groups had highly significant improvements in function (anterior, F = 17.34,
P < .001; posterior, F = 13.57, P < .001). Figure 2 shows mean SANE scores and significant improvement at 1, 3, and 6 months (see asterisks for anterior and posterior groups; P < .001 for all). The groups had parallel rates of improved function over time, as indicated by a nonsignificant (P = .51) difference in slopes. These function score improvements were significant for both injection routes and were independent of age, sex, and BMI (P > .05 for all).

Figure 2.

From the results of this prospective randomized study, we concluded subacromial CSI significantly reduces pain and improves function regardless of route used. In addition, age, sex, and BMI do not significantly affect the efficacy of either anterior CSI or posterior CSI.

Discussion

In patients with SIS, anterior CSI and posterior CSI provided significant improvements in pain and function 1, 3, and 6 months after injection. These effects were independent of age, sex, BMI, and PT participation. There were no significant differences in outcomes between injection routes.

When conservative treatments for SIS do not resolve symptoms, inflammation and pain can be reduced with use of subacromial CSI.4-8 Although clinical outcomes are inconsistent, CSI can be used to address SIS symptoms in appropriate patients. Specifically, Blair and colleagues6 found that, CSI consisting of 4 mL of lidocaine 1% (without epinephrine) and 2 mL (80 mg) of triamcinolone was effective in alleviating shoulder pain and improving shoulder range of motion. Other authors have similarly reported improved outcomes after subacromial injection and short-term follow-up with PT.4,7,8 Our findings are consistent with these reports: CSI coupled with a structured rehabilitation program is effective in alleviating symptoms associated with acute or subacute SIS.

Numerous studies have found improved clinical outcomes after anterior CSI and after posterior CSI,6-8 but no study has directly compared the clinical impact of anterior CSI with that of posterior CSI—which suggests injection route may not affect ultimate clinical outcomes.

CSI accuracy has been studied extensively.10-12,17-20 Although 2 studies found similar accuracy for anterior and posterior routes,10,11 there may be a sex difference: In women, a posterior route may be less accurate than an anterior or a lateral route.12 Collectively, these studies expose the inherent difficulty in treating shoulder pain with localized subacromial injection. Therapy may fail because of errant needle positioning. Two prospective studies found improved clinical outcomes with successful delivery of medication into the subacromial space.17,18 Poor clinical outcomes may result from inaccurate CSI.

In contrast to other clinical studies, our study found that injection route was not associated with differences in clinical response. In a prospective randomized clinical trial in which 75 patients received a subacromial injection, Marder and colleagues12 found anterior routes 84% accurate and posterior routes 56% accurate; they concluded acromion anatomy and subacromial bursa anatomy make posterior injections more difficult. As theorized by Gruson and colleagues,13 with use of an anterior route, the needle enters inferior to the concavity of the acromion and provides easier access to the subacromial space. This idea is in line with Marder and colleagues’12 conclusion that subacromial bursa anatomy provides a favorable environment for accurate CSI.

If accuracy is positively correlated with clinical improvement and anterior routes are more accurate, there should be a difference in response to posterior injections. Our results provide evidence that clinical response to CSI may not depend on injection accuracy. Perhaps merely placing the corticosteroid near the bursa is adequate for improving symptoms or perhaps some of the clinical improvement is due to the systemic effect of corticosteroids. These possibilities require further analysis.

Establishing the efficacy of CSI in SIS is difficult. The literature includes various study designs, different CSI indications and medication formulations, and varying emphasis on the role of organized PT. Rehabilitation has been found to alleviate joint pain by reducing inflammation,14 but data do not universally support this finding.21,22 Nevertheless, use of PT might explain the divergence in clinical outcomes reported by Marder and colleagues,12 who found anterior CSI more accurate than posterior CSI. In our practice, PT is recommended for all SIS patients, not only those who have CSI. Thus, our findings are framed within the context of successful CSI but may include patients who improved with PT alone. This issue raises the question of whether subacromial CSI should be guided by ultrasound. Ultrasound guidance can improve CSI accuracy and clinical outcomes,23-25 though the value of this benefit is debated.26

This study had several limitations. First, pain relief was patient reported. Second, the treatment plan involved CSI with PT but did not control for CSI used alone. PT, which is part of the standard of care for patients with SIS, added another degree of complexity to the study. Third, there may have been some variability in SIS severity (stage 1, 2, or 3). Fourth, although the study design controlled for various shoulder pathologies, advanced imaging, which could have provided diagnosis confirmation, was not available for all patients. Therefore, concurrent conditions may have confounded results. However, randomization was used to try to minimize this effect. Fifth, although injection routes were randomly assigned, the trial was not blinded. Sixth, the study was underpowered by 1 patient, as there was an estimated 20% dropout rate over 3 and 6 months of follow-up. However, we do not think our results were significantly affected.

Although more research is needed to fully describe the role of subacromial CSI in SIS, our study findings suggested that CSI using either an anterior or a posterior route creates a window of symptomatic relief in which patients may be able to engage in PT.

Conclusion

Both anterior CSI and posterior CSI significantly improved pain and function for up to 6 months. No differences were found between anterior and posterior CSIs. In the context of this study, CSI combined with structured PT produced significant improvement in pain and function in patients with SIS, regardless of injection route used. Clinicians should rely on their clinical acumen when selecting injection routes, as anterior and posterior are both beneficial.

Take-Home Points

  • When conservative treatments for SIS do not resolve symptoms, inflammation and pain can be reduced with use of subacromial CSI.

  • Both anterior CSI and posterior CSI significantly improved pain and function for up to 6 months

  • CSI combined with structured PT produced significant improvement in pain and function in patients with SIS, regardless of injection route used.

  • Clinical response to CSI may not depend on injection accuracy.

  • Clinicians should rely on their clinical acumen when selecting injection routes, as anterior and posterior are both beneficial.

Shoulder pain, a common clinical problem, occurs in 7% to 34% of the general population and in 21% of people older than 70 years.1Subacromial impingement refers to shoulder pain resulting from mechanical impingement of the rotator cuff underneath the coracoacromial arch between the acromion and the humeral head.2,3 Subacromial impingement syndrome (SIS) is the most common cause of shoulder pain, resulting in significant functional deficits and disability.3

Treatment options for SIS include conservative modalities such as use of nonsteroidal anti-inflammatory drugs, physical therapy (PT), and subacromial corticosteroid injections (CSIs). Studies have found short- and long-term improvement in pain, function, and range of motion after CSI.4-8 Subacromial CSI can be administered through an anterior or a posterior route.4,9 There have been several studies of the accuracy of anterior and posterior CSIs,10-12 with 2 studies finding similar accuracy for these routes.10,11 However, there may be a sex difference: In women, a posterior route may be less accurate than an anterior or a lateral route.12

Although the accuracy of anterior and posterior routes has been studied, their effect on clinical outcomes has not. We conducted a study to understand the effects of anterior and posterior CSIs on SIS. As one of the accuracy studies suggested anterior CSI is more accurate—the anterior route was theorized to provide easier access to the subacromial space12—we hypothesized patients treated with anterior CSI would have superior clinical outcomes 6 months after injection.12,13

Materials and Methods

Study Participants and Randomization

After this study received Institutional Review Board approval, patients with shoulder pain of more than 3 months’ duration and consistent with SIS were screened for inclusion. Eligible patients had pain in the anterior biceps and over the top of the shoulder with overhead activities as well as one or more clinical findings on physical examination: Hawkins-Kennedy sign, Neer sign, painful arc, and infraspinatus pain (pain with external rotation).

Patients were excluded if their history included prior subacromial CSI, adhesive capsulitis (inability to passively abduct shoulder to 90° with scapular stabilization), calcific tendonitis, radiographic evidence of os acromiale, cervical radiculopathy, Spurling sign, neck pain, radiating arm pain or numbness, sensory deficits, or neck and upper extremity motor dysfunction. Also excluded were patients with full-thickness rotator cuff tear, weakness on arm elevation, positive "drop arm sign," or high-riding humerus on standing shoulder radiograph. Patients who had work-related injuries or who were involved in worker compensation were excluded as well.

Enrolled patients were randomly assigned (with use of a computer-based random number generator) to receive either anterior CSI or posterior CSI.

Injection Procedures

All patients were administered 5 mL of lidocaine 1% (without epinephrine) and 2 mL (80 mg) of triamcinolone by 2 board-certified orthopedic surgeons using a 22-gauge 1½-inch needle. For patients who received their subacromial CSI by the anterior route, the arm was held in 0° of abduction and 20° of external rotation. The needle was inserted medial to the humeral head, lateral to the coracoid process, beginning 1 cm inferior to the clavicle with the needle directed posteriorly and laterally toward the acromion.10 For patients who received their CSI by the posterior route, the arm was held in 0° of abduction, the posterolateral corner of the acromion was identified by palpation, and the needle was inserted 1 cm inferior and medial to this point with the needle directed anteriorly and laterally toward the acromion.10,12 In both groups, the subacromial space was identified when a drop in pressure was felt during needle insertion. Accuracy was assessed post hoc by asking patients to grade their response to the injection on a visual analog scale (VAS); VAS score was used as a surrogate for improvement. All patients had a positive Neer test: Pain decreased with impingement maneuvers immediately after injection.

All patients were referred for PT provided according to an evidence-based rehabilitation protocol.14 This program emphasized range of motion with shoulder shrugs, scapular retraction, and pendulum exercises; flexibility with stretching exercises targeting the anterior and posterior aspects of the shoulder and cane stretching for forward elevation and external rotation; and strength with strengthening exercises involving the rotator cuff and scapular stabilizers.

Outcome Measures

Pain was measured with VAS scores and function with Single Assessment Numeric Evaluation (SANE) scores. The VAS is a validated outcome measure of pain intensity. A numeric version of the VAS was used: Patients selected the whole number, from 0 (no pain) to 10 (worst possible pain), that best reflected their pain intensity. On SANE, another validated outcome measure, patients rated their shoulder function as a percentage of normal, from 0% (no function possible) to 100% (perfect).15 Before injection, all patients were administered the VAS and SANE questionnaires to establish their baseline pain level and opinion of shoulder function. These measures were repeated 1, 3, and 6 months after injection. Telephone interviews were conducted at 1 month and 6 months. Patients were asked to return to clinic 3 months after injection as part of the standard of care. At 3 months, 47 (86%) of the 55 patients returned for follow-up and were administered the VAS and SANE questionnaires; the other 8 completed the questionnaires by telephone. At each time point, patients were asked to report on their participation in PT and/or adherence to their home exercise program.

Statistical Analysis

Power analysis performed with Student t test and a 2-sided level of P = .05 compared VAS pain scores between the anterior and posterior injection routes and found a mean (SD) difference of 1.4 (1.7).16 Power calculations made with nQuery Advisor Version 7.0 (Statistical Solutions) indicated a total sample size of 60 patients (30/group) would provide 80% power for detecting a significant difference assuming a 20% dropout rate.

Two-way mixed-model analysis of variance (ANOVA) was used to compare the anterior and posterior routes for statistical differences in both VAS pain scores and SANE function scores at baseline and 1, 3, and 6 months after injection. Likewise, time at baseline (just before injection)was compared with follow-up (1, 3, 6 months) with 2-way mixed-model ANOVA adjusting for anterior or posterior route. Multivariate analysis was performed to evaluate differences between baseline and 6-month follow-up with respect to anterior and posterior injection routes, controlling for age, sex, and body mass index (BMI) for VAS and SANE scores. Parametric testing methods were used for statistical analysis, which was performed with IBM SPSS Statistics Version 21.0 (IBM Corp). Significance was set at P < .05.

Results

Patient Characteristics

Of the 55 patients enrolled, 25 (46%) received anterior subacromial CSI and 30 (54%) received posterior CSI. All enrolled patients had a positive Neer impingement test immediately after injection. Mean (SD) age was 48 (9.3) years for anterior group patients and 48 (9.0) years for posterior group patients. There was no significant difference in age or BMI between the 2 groups (Table).

Table.

Five patients (9%) were excluded from the study after randomization and CSI: 2 for a full-thickness rotator cuff tear, 1 for a Bankart lesion, 1 for adhesive capsulitis, and 1 for a worker compensation claim.

One month after injection, 41 patients (75%) reported having engaged in PT as prescribed. Of the 47 patients (86%) who returned for the 3-month follow-up, 25 (46%) reported having engaged in PT between 1 month and 3 months after injection. Fourteen patients (26%) reported attending PT between 3 and 6 months post-injection.

Outcome Measures

Two-way repeated-measures ANOVA with age, sex, and BMI included as covariates revealed no significant differences in VAS scores between the anterior and posterior groups at any time point (P = .45). Both groups had highly significant pain reductions (anterior, F = 9.71, P < .001; posterior, F = 13.46, P < .001). Figure 1 shows mean VAS scores and significant reductions in pain 1, 3, and 6 months after injection (see asterisks for anterior and posterior groups; P < .001 for all). The groups had parallel rates of pain reduction over time, as indicated by a nonsignificant (P = .50) difference in slopes. These pain score reductions were significant for both injection routes and were independent of age, sex, and BMI (P > .05 for all).

Figure 1.

Two-way repeated-measures ANOVA with age, sex, and BMI included as covariates revealed no significant differences in SANE scores between the anterior and posterior groups, except for a higher mean score in the anterior group at 3 months
(P = .02). There were no other group differences (P > .10 for all). Both groups had highly significant improvements in function (anterior, F = 17.34,
P < .001; posterior, F = 13.57, P < .001). Figure 2 shows mean SANE scores and significant improvement at 1, 3, and 6 months (see asterisks for anterior and posterior groups; P < .001 for all). The groups had parallel rates of improved function over time, as indicated by a nonsignificant (P = .51) difference in slopes. These function score improvements were significant for both injection routes and were independent of age, sex, and BMI (P > .05 for all).

Figure 2.

From the results of this prospective randomized study, we concluded subacromial CSI significantly reduces pain and improves function regardless of route used. In addition, age, sex, and BMI do not significantly affect the efficacy of either anterior CSI or posterior CSI.

Discussion

In patients with SIS, anterior CSI and posterior CSI provided significant improvements in pain and function 1, 3, and 6 months after injection. These effects were independent of age, sex, BMI, and PT participation. There were no significant differences in outcomes between injection routes.

When conservative treatments for SIS do not resolve symptoms, inflammation and pain can be reduced with use of subacromial CSI.4-8 Although clinical outcomes are inconsistent, CSI can be used to address SIS symptoms in appropriate patients. Specifically, Blair and colleagues6 found that, CSI consisting of 4 mL of lidocaine 1% (without epinephrine) and 2 mL (80 mg) of triamcinolone was effective in alleviating shoulder pain and improving shoulder range of motion. Other authors have similarly reported improved outcomes after subacromial injection and short-term follow-up with PT.4,7,8 Our findings are consistent with these reports: CSI coupled with a structured rehabilitation program is effective in alleviating symptoms associated with acute or subacute SIS.

Numerous studies have found improved clinical outcomes after anterior CSI and after posterior CSI,6-8 but no study has directly compared the clinical impact of anterior CSI with that of posterior CSI—which suggests injection route may not affect ultimate clinical outcomes.

CSI accuracy has been studied extensively.10-12,17-20 Although 2 studies found similar accuracy for anterior and posterior routes,10,11 there may be a sex difference: In women, a posterior route may be less accurate than an anterior or a lateral route.12 Collectively, these studies expose the inherent difficulty in treating shoulder pain with localized subacromial injection. Therapy may fail because of errant needle positioning. Two prospective studies found improved clinical outcomes with successful delivery of medication into the subacromial space.17,18 Poor clinical outcomes may result from inaccurate CSI.

In contrast to other clinical studies, our study found that injection route was not associated with differences in clinical response. In a prospective randomized clinical trial in which 75 patients received a subacromial injection, Marder and colleagues12 found anterior routes 84% accurate and posterior routes 56% accurate; they concluded acromion anatomy and subacromial bursa anatomy make posterior injections more difficult. As theorized by Gruson and colleagues,13 with use of an anterior route, the needle enters inferior to the concavity of the acromion and provides easier access to the subacromial space. This idea is in line with Marder and colleagues’12 conclusion that subacromial bursa anatomy provides a favorable environment for accurate CSI.

If accuracy is positively correlated with clinical improvement and anterior routes are more accurate, there should be a difference in response to posterior injections. Our results provide evidence that clinical response to CSI may not depend on injection accuracy. Perhaps merely placing the corticosteroid near the bursa is adequate for improving symptoms or perhaps some of the clinical improvement is due to the systemic effect of corticosteroids. These possibilities require further analysis.

Establishing the efficacy of CSI in SIS is difficult. The literature includes various study designs, different CSI indications and medication formulations, and varying emphasis on the role of organized PT. Rehabilitation has been found to alleviate joint pain by reducing inflammation,14 but data do not universally support this finding.21,22 Nevertheless, use of PT might explain the divergence in clinical outcomes reported by Marder and colleagues,12 who found anterior CSI more accurate than posterior CSI. In our practice, PT is recommended for all SIS patients, not only those who have CSI. Thus, our findings are framed within the context of successful CSI but may include patients who improved with PT alone. This issue raises the question of whether subacromial CSI should be guided by ultrasound. Ultrasound guidance can improve CSI accuracy and clinical outcomes,23-25 though the value of this benefit is debated.26

This study had several limitations. First, pain relief was patient reported. Second, the treatment plan involved CSI with PT but did not control for CSI used alone. PT, which is part of the standard of care for patients with SIS, added another degree of complexity to the study. Third, there may have been some variability in SIS severity (stage 1, 2, or 3). Fourth, although the study design controlled for various shoulder pathologies, advanced imaging, which could have provided diagnosis confirmation, was not available for all patients. Therefore, concurrent conditions may have confounded results. However, randomization was used to try to minimize this effect. Fifth, although injection routes were randomly assigned, the trial was not blinded. Sixth, the study was underpowered by 1 patient, as there was an estimated 20% dropout rate over 3 and 6 months of follow-up. However, we do not think our results were significantly affected.

Although more research is needed to fully describe the role of subacromial CSI in SIS, our study findings suggested that CSI using either an anterior or a posterior route creates a window of symptomatic relief in which patients may be able to engage in PT.

Conclusion

Both anterior CSI and posterior CSI significantly improved pain and function for up to 6 months. No differences were found between anterior and posterior CSIs. In the context of this study, CSI combined with structured PT produced significant improvement in pain and function in patients with SIS, regardless of injection route used. Clinicians should rely on their clinical acumen when selecting injection routes, as anterior and posterior are both beneficial.

References

1. Buchbinder R, Green S, Youd JM. Corticosteroid injections for shoulder pain. Cochrane Database Syst Rev. 2003;(1):CD004016.

2. Bell AD, Conaway D. Corticosteroid injections for painful shoulders. Int J Clin Pract. 2005;59(10):1178-1186.

3. Michener LA, McClure PW, Karduna AR. Anatomical and biomechanical mechanisms of subacromial impingement syndrome. Clin Biomech. 2003;18(5):369-379.

4. Akgün K, Birtane M, Akarirmak U. Is local subacromial corticosteroid injection beneficial in subacromial impingement syndrome? Clin Rheumatol. 2004;23(6):496-500.

5. Bhagra A, Syed H, Reed DA, et al. Efficacy of musculoskeletal injections by primary care providers in the office: a retrospective cohort study. Int J Gen Med. 2013;6:237-243.

6. Blair B, Rokito AS, Cuomo F, Jarolem K, Zuckerman JD. Efficacy of injections of corticosteroids for subacromial impingement syndrome. J Bone Joint Surg Am. 1996;78(11):1685-1689.

7. Cummins CA, Sasso LM, Nicholson D. Impingement syndrome: temporal outcomes of nonoperative treatment.
J Shoulder Elbow Surg. 2009;18(2):172-177.

8. Yu C, Chen CH, Liu HT, Dai MH, Wang IC, Wang KC. Subacromial injections of corticosteroids and Xylocaine for painful subacromial impingement syndrome. Chang Gung Med J. 2006;29(5):474-478.

9. Codsi MJ. The painful shoulder: when to inject and when to refer. Cleve Clin J Med. 2007;74(7):473-474, 477-478, 480-482 passim.

10. Henkus HE, Cobben LP, Coerkamp EG, Nelissen RG, van Arkel ER. The accuracy of subacromial injections: a prospective randomized magnetic resonance imaging study. Arthroscopy. 2006;22(3):277-282.

11. Kang MN, Rizio L, Prybicien M, Middlemas DA, Blacksin MF. The accuracy of subacromial corticosteroid injections: a comparison of multiple methods. J Shoulder Elbow Surg. 2008;17(15):61S-66S.

12. Marder RA, Kim SH, Labson JD, Hunter JC. Injection of the subacromial bursa in patients with rotator cuff syndrome: a prospective, randomized study comparing the effectiveness of different routes. J Bone Joint Surg Am. 2012;94(16):
1442-1447.

13. Gruson, KI, Ruchelsman DE, Zuckerman JD. Subacromial corticosteroid injections. J Shoulder Elbow Surg. 2008;17(1 suppl):118S-130S.

14. Kuhn JE. Exercise in the treatment of rotator cuff impingement: a systematic review and a synthesized evidence-based rehabilitation protocol. J Shoulder Elbow Surg. 2009;18(1):138-160.

15. Williams GN, Gangel TJ, Arciero RA, Uhorchak JM, Taylor DC. Comparison of the Single Assessment Numeric Evaluation method and two shoulder rating scales. Outcomes measures after shoulder surgery. Am J Sports Med. 1999;27(2):214-221.

16. Tashjian RZ, Deloach J, Porucznik CA, Powell AP. Minimal clinically important differences (MCID) and patient acceptable symptomatic state (PASS) for visual analog scales (VAS) measuring pain in patients treated for rotator cuff disease.
J Shoulder Elbow Surg. 2009;88(6):927-932.

17. Eustace JA, Brophy DP, Gibney RP, Bresnihan B, FitzGerald O. Comparison of the accuracy of steroid placement with clinical outcome in patients with shoulder symptoms. Ann Rheum Dis. 1997;56(1):59-63.

18. Esenyel CZ, Esenyel M, Yeiltepe R, et al. The correlation between the accuracy of steroid injections and subsequent shoulder pain and function in subacromial impingement
syndrome [in Turkish]. Acta Orthop Traumatol Turc. 2003;37(1):
41-45.

19. Powell SE, Davis SM, Lee EH, et al. Accuracy of palpation-directed intra-articular glenohumeral injection confirmed by magnetic resonance arthrography. Arthroscopy. 2015;31(2):205-208.

20. Rutten MJ, Maresch BJ, Jager GJ, de Waal Malefijt MC. Injection of the subacromial-subdeltoid bursa: blind or ultrasound-guided? Acta Orthop. 2007;78(2):254-257.

21. Desmeules F, Côté CH, Frémont P. Therapeutic exercise and orthopedic manual therapy for impingement syndrome: a systematic review. Clin J Sport Med. 2003;13(3):176-182.

22. Winters JC, Sobel JS, Groenier KH, Arendzen HJ, Meyboom-de Jong B. Comparison of physiotherapy, manipulation, and corticosteroid injection for treating shoulder complaints in general practice: randomised, single blind study. BMJ. 1997;314(7090):1320-1325.

23. Chen MJ, Lew HL, Hsu TC, et al. Ultrasound-guided shoulder injections in the treatment of subacromial bursitis. Am J Phys Med Rehabil. 2006;85(1):31-35.

24. Hsieh LF, Hsu WC, Lin YJ, Wu SH, Chang KC, Chang HL. Is ultrasound-guided injection more effective in chronic subacromial bursitis? Med Sci Sports Exerc. 2013;45(12):
2205-2213.

25. Naredo E, Cabero F, Beneyto P, et al. A randomized comparative study of short term response to blind injection versus sonographic-guided injection of local corticosteroids in patients with painful shoulder. J Rheumatol. 2004;31(2):308-314.

26. Hall S, Buchbinder R. Do imaging methods that guide needle placement improve outcome? Ann Rheum Dis. 2004;63(9):1007-1008.

References

1. Buchbinder R, Green S, Youd JM. Corticosteroid injections for shoulder pain. Cochrane Database Syst Rev. 2003;(1):CD004016.

2. Bell AD, Conaway D. Corticosteroid injections for painful shoulders. Int J Clin Pract. 2005;59(10):1178-1186.

3. Michener LA, McClure PW, Karduna AR. Anatomical and biomechanical mechanisms of subacromial impingement syndrome. Clin Biomech. 2003;18(5):369-379.

4. Akgün K, Birtane M, Akarirmak U. Is local subacromial corticosteroid injection beneficial in subacromial impingement syndrome? Clin Rheumatol. 2004;23(6):496-500.

5. Bhagra A, Syed H, Reed DA, et al. Efficacy of musculoskeletal injections by primary care providers in the office: a retrospective cohort study. Int J Gen Med. 2013;6:237-243.

6. Blair B, Rokito AS, Cuomo F, Jarolem K, Zuckerman JD. Efficacy of injections of corticosteroids for subacromial impingement syndrome. J Bone Joint Surg Am. 1996;78(11):1685-1689.

7. Cummins CA, Sasso LM, Nicholson D. Impingement syndrome: temporal outcomes of nonoperative treatment.
J Shoulder Elbow Surg. 2009;18(2):172-177.

8. Yu C, Chen CH, Liu HT, Dai MH, Wang IC, Wang KC. Subacromial injections of corticosteroids and Xylocaine for painful subacromial impingement syndrome. Chang Gung Med J. 2006;29(5):474-478.

9. Codsi MJ. The painful shoulder: when to inject and when to refer. Cleve Clin J Med. 2007;74(7):473-474, 477-478, 480-482 passim.

10. Henkus HE, Cobben LP, Coerkamp EG, Nelissen RG, van Arkel ER. The accuracy of subacromial injections: a prospective randomized magnetic resonance imaging study. Arthroscopy. 2006;22(3):277-282.

11. Kang MN, Rizio L, Prybicien M, Middlemas DA, Blacksin MF. The accuracy of subacromial corticosteroid injections: a comparison of multiple methods. J Shoulder Elbow Surg. 2008;17(15):61S-66S.

12. Marder RA, Kim SH, Labson JD, Hunter JC. Injection of the subacromial bursa in patients with rotator cuff syndrome: a prospective, randomized study comparing the effectiveness of different routes. J Bone Joint Surg Am. 2012;94(16):
1442-1447.

13. Gruson, KI, Ruchelsman DE, Zuckerman JD. Subacromial corticosteroid injections. J Shoulder Elbow Surg. 2008;17(1 suppl):118S-130S.

14. Kuhn JE. Exercise in the treatment of rotator cuff impingement: a systematic review and a synthesized evidence-based rehabilitation protocol. J Shoulder Elbow Surg. 2009;18(1):138-160.

15. Williams GN, Gangel TJ, Arciero RA, Uhorchak JM, Taylor DC. Comparison of the Single Assessment Numeric Evaluation method and two shoulder rating scales. Outcomes measures after shoulder surgery. Am J Sports Med. 1999;27(2):214-221.

16. Tashjian RZ, Deloach J, Porucznik CA, Powell AP. Minimal clinically important differences (MCID) and patient acceptable symptomatic state (PASS) for visual analog scales (VAS) measuring pain in patients treated for rotator cuff disease.
J Shoulder Elbow Surg. 2009;88(6):927-932.

17. Eustace JA, Brophy DP, Gibney RP, Bresnihan B, FitzGerald O. Comparison of the accuracy of steroid placement with clinical outcome in patients with shoulder symptoms. Ann Rheum Dis. 1997;56(1):59-63.

18. Esenyel CZ, Esenyel M, Yeiltepe R, et al. The correlation between the accuracy of steroid injections and subsequent shoulder pain and function in subacromial impingement
syndrome [in Turkish]. Acta Orthop Traumatol Turc. 2003;37(1):
41-45.

19. Powell SE, Davis SM, Lee EH, et al. Accuracy of palpation-directed intra-articular glenohumeral injection confirmed by magnetic resonance arthrography. Arthroscopy. 2015;31(2):205-208.

20. Rutten MJ, Maresch BJ, Jager GJ, de Waal Malefijt MC. Injection of the subacromial-subdeltoid bursa: blind or ultrasound-guided? Acta Orthop. 2007;78(2):254-257.

21. Desmeules F, Côté CH, Frémont P. Therapeutic exercise and orthopedic manual therapy for impingement syndrome: a systematic review. Clin J Sport Med. 2003;13(3):176-182.

22. Winters JC, Sobel JS, Groenier KH, Arendzen HJ, Meyboom-de Jong B. Comparison of physiotherapy, manipulation, and corticosteroid injection for treating shoulder complaints in general practice: randomised, single blind study. BMJ. 1997;314(7090):1320-1325.

23. Chen MJ, Lew HL, Hsu TC, et al. Ultrasound-guided shoulder injections in the treatment of subacromial bursitis. Am J Phys Med Rehabil. 2006;85(1):31-35.

24. Hsieh LF, Hsu WC, Lin YJ, Wu SH, Chang KC, Chang HL. Is ultrasound-guided injection more effective in chronic subacromial bursitis? Med Sci Sports Exerc. 2013;45(12):
2205-2213.

25. Naredo E, Cabero F, Beneyto P, et al. A randomized comparative study of short term response to blind injection versus sonographic-guided injection of local corticosteroids in patients with painful shoulder. J Rheumatol. 2004;31(2):308-314.

26. Hall S, Buchbinder R. Do imaging methods that guide needle placement improve outcome? Ann Rheum Dis. 2004;63(9):1007-1008.

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How to reduce NICU transfers for asymptomatic hypoglycemia

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Tue, 05/03/2022 - 15:22

– At the University of North Carolina at Chapel Hill, many infants who would previously have been transferred to the NICU for asymptomatic hypoglycemia now are staying with their moms, thanks to a new protocol that holds off on blood glucose testing until infants are fed for the first time and glucose homeostasis can begin.

 

Not too long ago, the university realized it had a problem that’s probably familiar to other institutions: Its system to monitor newborns at risk for hypoglycemia – those born to diabetic mothers, or who are small or large for gestational age – put too many infants with asymptomatic hypoglycemia into the NICU when they didn’t really need to be there.

Nurse practitioners “were tired of transferring babies they felt were responsive to feeding and did not actually require NICU care,” and “a growing number of families were unhappy with being separated from infants that were well-appearing and feeding well at a time when moms were trying to establish breast feeding and bonding. There was frustration with our protocol,” which “seemed rigid and outdated,” said Ashley Sutton, MD, a pediatric hospitalist at the university.

Dr. Ashley Sutton
Under the old system, blood glucose was checked within an hour of birth whether the infant had fed or not, and infants were sent to the NICU if glucose levels were below 25 mg/dL; the protocol didn’t take into account the normal physiologic glucose nadir after birth, or allow enough time for the initiation of glucose homeostasis. While nursery staff waited for NICU personnel to arrive, “[We’d do] nothing, when moms were there with milk,” Dr. Sutton said at the Pediatric Hospital Medicine annual meeting.

To fix the problem, Dr. Sutton and others on a multidisciplinary team implemented the American Academy of Pediatrics’ 2011 guidelines for monitoring glucose homeostasis in late-preterm and term newborns at-risk for hypoglycemia, with an additional mandate to initiate immediate, continual skin-to-skin contact at delivery (Pediatrics. 2011 Mar;127[3]:575-9).

Under the new system, children are fed with either their mom’s or a donor’s breast milk within an hour of birth, and the initial glucose check comes at 90 minutes; infants are transferred if blood glucose remains below 25 mg/dL after the second feeding. After 4 hours of life, glucose levels below 35 mg/dL trigger an evaluation for symptoms, not necessarily an automatic NICU transfer.

Labor and delivery nurses also are empowered “to immediately feed the baby no matter what number [they are] seeing,” Dr. Sutton said at the meeting, sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.

The efforts have made a difference. The transfer rate for at-risk infants has fallen from 17% to 3%, and skin-to-skin contact is initiated within the first hour of life in 64%, up from 45%. Feeding of at-risk infants within the first hour has increased from 43% to 61%, and the first glucose check comes at an average of 97 minutes. The number of unnecessary NICU transfers of at-risk infants has fallen sharply.

Meanwhile, there’s been no increase in sepsis evaluations, adverse events, readmissions, and the rates of symptomatic hypoglycemia.

Dr. Sutton and her colleagues had no industry disclosures. The work was funded by the National Institutes of Health.

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– At the University of North Carolina at Chapel Hill, many infants who would previously have been transferred to the NICU for asymptomatic hypoglycemia now are staying with their moms, thanks to a new protocol that holds off on blood glucose testing until infants are fed for the first time and glucose homeostasis can begin.

 

Not too long ago, the university realized it had a problem that’s probably familiar to other institutions: Its system to monitor newborns at risk for hypoglycemia – those born to diabetic mothers, or who are small or large for gestational age – put too many infants with asymptomatic hypoglycemia into the NICU when they didn’t really need to be there.

Nurse practitioners “were tired of transferring babies they felt were responsive to feeding and did not actually require NICU care,” and “a growing number of families were unhappy with being separated from infants that were well-appearing and feeding well at a time when moms were trying to establish breast feeding and bonding. There was frustration with our protocol,” which “seemed rigid and outdated,” said Ashley Sutton, MD, a pediatric hospitalist at the university.

Dr. Ashley Sutton
Under the old system, blood glucose was checked within an hour of birth whether the infant had fed or not, and infants were sent to the NICU if glucose levels were below 25 mg/dL; the protocol didn’t take into account the normal physiologic glucose nadir after birth, or allow enough time for the initiation of glucose homeostasis. While nursery staff waited for NICU personnel to arrive, “[We’d do] nothing, when moms were there with milk,” Dr. Sutton said at the Pediatric Hospital Medicine annual meeting.

To fix the problem, Dr. Sutton and others on a multidisciplinary team implemented the American Academy of Pediatrics’ 2011 guidelines for monitoring glucose homeostasis in late-preterm and term newborns at-risk for hypoglycemia, with an additional mandate to initiate immediate, continual skin-to-skin contact at delivery (Pediatrics. 2011 Mar;127[3]:575-9).

Under the new system, children are fed with either their mom’s or a donor’s breast milk within an hour of birth, and the initial glucose check comes at 90 minutes; infants are transferred if blood glucose remains below 25 mg/dL after the second feeding. After 4 hours of life, glucose levels below 35 mg/dL trigger an evaluation for symptoms, not necessarily an automatic NICU transfer.

Labor and delivery nurses also are empowered “to immediately feed the baby no matter what number [they are] seeing,” Dr. Sutton said at the meeting, sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.

The efforts have made a difference. The transfer rate for at-risk infants has fallen from 17% to 3%, and skin-to-skin contact is initiated within the first hour of life in 64%, up from 45%. Feeding of at-risk infants within the first hour has increased from 43% to 61%, and the first glucose check comes at an average of 97 minutes. The number of unnecessary NICU transfers of at-risk infants has fallen sharply.

Meanwhile, there’s been no increase in sepsis evaluations, adverse events, readmissions, and the rates of symptomatic hypoglycemia.

Dr. Sutton and her colleagues had no industry disclosures. The work was funded by the National Institutes of Health.

– At the University of North Carolina at Chapel Hill, many infants who would previously have been transferred to the NICU for asymptomatic hypoglycemia now are staying with their moms, thanks to a new protocol that holds off on blood glucose testing until infants are fed for the first time and glucose homeostasis can begin.

 

Not too long ago, the university realized it had a problem that’s probably familiar to other institutions: Its system to monitor newborns at risk for hypoglycemia – those born to diabetic mothers, or who are small or large for gestational age – put too many infants with asymptomatic hypoglycemia into the NICU when they didn’t really need to be there.

Nurse practitioners “were tired of transferring babies they felt were responsive to feeding and did not actually require NICU care,” and “a growing number of families were unhappy with being separated from infants that were well-appearing and feeding well at a time when moms were trying to establish breast feeding and bonding. There was frustration with our protocol,” which “seemed rigid and outdated,” said Ashley Sutton, MD, a pediatric hospitalist at the university.

Dr. Ashley Sutton
Under the old system, blood glucose was checked within an hour of birth whether the infant had fed or not, and infants were sent to the NICU if glucose levels were below 25 mg/dL; the protocol didn’t take into account the normal physiologic glucose nadir after birth, or allow enough time for the initiation of glucose homeostasis. While nursery staff waited for NICU personnel to arrive, “[We’d do] nothing, when moms were there with milk,” Dr. Sutton said at the Pediatric Hospital Medicine annual meeting.

To fix the problem, Dr. Sutton and others on a multidisciplinary team implemented the American Academy of Pediatrics’ 2011 guidelines for monitoring glucose homeostasis in late-preterm and term newborns at-risk for hypoglycemia, with an additional mandate to initiate immediate, continual skin-to-skin contact at delivery (Pediatrics. 2011 Mar;127[3]:575-9).

Under the new system, children are fed with either their mom’s or a donor’s breast milk within an hour of birth, and the initial glucose check comes at 90 minutes; infants are transferred if blood glucose remains below 25 mg/dL after the second feeding. After 4 hours of life, glucose levels below 35 mg/dL trigger an evaluation for symptoms, not necessarily an automatic NICU transfer.

Labor and delivery nurses also are empowered “to immediately feed the baby no matter what number [they are] seeing,” Dr. Sutton said at the meeting, sponsored by the Society of Hospital Medicine, the American Academy of Pediatrics, and the Academic Pediatric Association.

The efforts have made a difference. The transfer rate for at-risk infants has fallen from 17% to 3%, and skin-to-skin contact is initiated within the first hour of life in 64%, up from 45%. Feeding of at-risk infants within the first hour has increased from 43% to 61%, and the first glucose check comes at an average of 97 minutes. The number of unnecessary NICU transfers of at-risk infants has fallen sharply.

Meanwhile, there’s been no increase in sepsis evaluations, adverse events, readmissions, and the rates of symptomatic hypoglycemia.

Dr. Sutton and her colleagues had no industry disclosures. The work was funded by the National Institutes of Health.

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Key clinical point: Feed newborns at risk for hypoglycemia before checking their blood glucose levels.

Major finding: After making that and other changes, the transfer rate for at-risk infants at a major academic center fell from 17% to 3%, without an increase in rates of symptomatic hypoglycemia and adverse events.

Data source: Quality improvement project at the University of North Carolina at Chapel Hill.

Disclosures: The investigators had no financial disclosures. The work was funded by the National Institutes of Health.

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VESAP4 Mobile App Coming Soon

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The mobile companion app (Apple products only) for VESAP4 is expected to be released by mid-September. The app permits users to access the program offline anywhere and sync up with the desktop app when later connected to the Internet.

It will be available on the iTunes store and is free to VESAP4 purchasers. Learn more about the fourth edition of the Vascular Education and Self-Assessment Program (VESAP4) here.

 

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The mobile companion app (Apple products only) for VESAP4 is expected to be released by mid-September. The app permits users to access the program offline anywhere and sync up with the desktop app when later connected to the Internet.

It will be available on the iTunes store and is free to VESAP4 purchasers. Learn more about the fourth edition of the Vascular Education and Self-Assessment Program (VESAP4) here.

 

The mobile companion app (Apple products only) for VESAP4 is expected to be released by mid-September. The app permits users to access the program offline anywhere and sync up with the desktop app when later connected to the Internet.

It will be available on the iTunes store and is free to VESAP4 purchasers. Learn more about the fourth edition of the Vascular Education and Self-Assessment Program (VESAP4) here.

 

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