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The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index

PURPOSE: To evaluate the effect of acromioplasty using a cutting block technique on bony coverage as measured by the critical shoulder angle (CSA) and acromial index (AI). METHODS: This study is a retrospective radiographic review using data from a previous prospective randomized clinical trial that...

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Autores principales: MacLean, Ian S., Gowd, Anirudh K., Waterman, Brian R., Dempsey, Ian J., Bach, Bernard R., Cole, Brian J., Romeo, Anthony A., Verma, Nikhil N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7588649/
https://www.ncbi.nlm.nih.gov/pubmed/33135003
http://dx.doi.org/10.1016/j.asmr.2020.07.012
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author MacLean, Ian S.
Gowd, Anirudh K.
Waterman, Brian R.
Dempsey, Ian J.
Bach, Bernard R.
Cole, Brian J.
Romeo, Anthony A.
Verma, Nikhil N.
author_facet MacLean, Ian S.
Gowd, Anirudh K.
Waterman, Brian R.
Dempsey, Ian J.
Bach, Bernard R.
Cole, Brian J.
Romeo, Anthony A.
Verma, Nikhil N.
author_sort MacLean, Ian S.
collection PubMed
description PURPOSE: To evaluate the effect of acromioplasty using a cutting block technique on bony coverage as measured by the critical shoulder angle (CSA) and acromial index (AI). METHODS: This study is a retrospective radiographic review using data from a previous prospective randomized clinical trial that offered enrollment to patients aged 18 years or older with a full-thickness tear of the superior rotator cuff between October 2007 and January 2011. Each patient was allocated to repair with either acromioplasty using a cutting block technique or non-acromioplasty treatment arms in a blinded fashion. Medical and demographic information was recorded for each patient. Between January 2017 and December 2017, patients were contacted for repeat follow-up clinical evaluation and radiographs. Measurements of acromial index and critical shoulder angle were performed on pre- and postoperative radiographs by a single reviewer. RESULTS: Seventy-one (75%) patients were available for follow up. The 2 groups were similar in terms of baseline demographics and acromial type. When compared with preoperative measures, acromioplasty did not result in significant reductions in mean CSA (34.5° vs 35.5°; P = .293) or AI (0.68 vs 0.66; P = .283). Furthermore, postoperative CSA (34.5° vs 36.2°, P = .052) and AI (0.66 vs 0.67, P = .535) demonstrated no statistically significant differences between patients with and without acromioplasty, respectively. CONCLUSIONS: There was no statistically significant change in either the CSA or AI following acromioplasty, nor was there a significant postoperative difference in CSA or AI between the group that underwent acromioplasty and the group that did not. CLINICAL RELEVANCE: Some studies suggest a greater postoperative CSA may result in greater risk of retear after arthroscopic rotator cuff repair. The CSA and AI may not be modifiable with acromioplasty.
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spelling pubmed-75886492020-10-30 The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index MacLean, Ian S. Gowd, Anirudh K. Waterman, Brian R. Dempsey, Ian J. Bach, Bernard R. Cole, Brian J. Romeo, Anthony A. Verma, Nikhil N. Arthrosc Sports Med Rehabil Original Article PURPOSE: To evaluate the effect of acromioplasty using a cutting block technique on bony coverage as measured by the critical shoulder angle (CSA) and acromial index (AI). METHODS: This study is a retrospective radiographic review using data from a previous prospective randomized clinical trial that offered enrollment to patients aged 18 years or older with a full-thickness tear of the superior rotator cuff between October 2007 and January 2011. Each patient was allocated to repair with either acromioplasty using a cutting block technique or non-acromioplasty treatment arms in a blinded fashion. Medical and demographic information was recorded for each patient. Between January 2017 and December 2017, patients were contacted for repeat follow-up clinical evaluation and radiographs. Measurements of acromial index and critical shoulder angle were performed on pre- and postoperative radiographs by a single reviewer. RESULTS: Seventy-one (75%) patients were available for follow up. The 2 groups were similar in terms of baseline demographics and acromial type. When compared with preoperative measures, acromioplasty did not result in significant reductions in mean CSA (34.5° vs 35.5°; P = .293) or AI (0.68 vs 0.66; P = .283). Furthermore, postoperative CSA (34.5° vs 36.2°, P = .052) and AI (0.66 vs 0.67, P = .535) demonstrated no statistically significant differences between patients with and without acromioplasty, respectively. CONCLUSIONS: There was no statistically significant change in either the CSA or AI following acromioplasty, nor was there a significant postoperative difference in CSA or AI between the group that underwent acromioplasty and the group that did not. CLINICAL RELEVANCE: Some studies suggest a greater postoperative CSA may result in greater risk of retear after arthroscopic rotator cuff repair. The CSA and AI may not be modifiable with acromioplasty. Elsevier 2020-09-30 /pmc/articles/PMC7588649/ /pubmed/33135003 http://dx.doi.org/10.1016/j.asmr.2020.07.012 Text en © 2020 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Article
MacLean, Ian S.
Gowd, Anirudh K.
Waterman, Brian R.
Dempsey, Ian J.
Bach, Bernard R.
Cole, Brian J.
Romeo, Anthony A.
Verma, Nikhil N.
The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index
title The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index
title_full The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index
title_fullStr The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index
title_full_unstemmed The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index
title_short The Effect of Acromioplasty on the Critical Shoulder Angle and Acromial Index
title_sort effect of acromioplasty on the critical shoulder angle and acromial index
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7588649/
https://www.ncbi.nlm.nih.gov/pubmed/33135003
http://dx.doi.org/10.1016/j.asmr.2020.07.012
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