{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,19]],"date-time":"2026-04-19T06:56:37Z","timestamp":1776581797303,"version":"3.51.2"},"reference-count":23,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2023,10,26]],"date-time":"2023-10-26T00:00:00Z","timestamp":1698278400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001200","name":"Australian Orthopaedic Association","doi-asserted-by":"publisher","award":["Research Foundation Grant"],"award-info":[{"award-number":["Research Foundation Grant"]}],"id":[{"id":"10.13039\/501100001200","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Subacromial impingement (SAI) is associated with shoulder pain and dysfunction and is exacerbated by rotator cuff tears; however, the role of acromioplasty in mitigating subacromial contact in the rotator cuff deficient shoulder remains debated. This study aimed to quantify the influence of isolated and combined tears involving the supraspinatus on subacromial contact during abduction; and second, to evaluate the influence of acromioplasty on joint space size and subacromial contact under these pathological conditions. Eight fresh\u2010frozen human cadaveric upper limbs were mounted to a computer\u2010controlled testing apparatus that simulated joint motion by simulated force application. Shoulder abduction was performed while three\u2010dimensional joint kinematics was measured using an optoelectronic system, and subacromial contact evaluated using a digital pressure sensor secured to the inferior acromion. Testing was performed after an isolated tear to the supraspinatus, as well as tears involving the subscapularis and infraspinatus\u2010teres minor, both before and after acromioplasty. Rotator cuff tears significantly increased peak subacromial pressure (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), average subacromial pressure (<jats:italic>p<\/jats:italic>\u2009=\u20090.001), and contact force (<jats:italic>p<\/jats:italic>\u2009=\u20090.034) relative to those in the intact shoulder. Following acromioplasty, significantly lower peak subacromial contact pressure, force and area were observed for all rotator cuff tears involving the supraspinatus at 30\u00b0 of abduction (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). Acromioplasty predominantly reduces acromion thickness anteriorly thereby reducing subacromial contact in the rotator cuff deficient shoulder, particularly in early to mid\u2010abduction where superior glenohumeral joint shear force potential is large. These findings provide a biomechanical basis for acromioplasty as an intervention for SAI syndrome and as an adjunct to rotator cuff repairs.<\/jats:p>","DOI":"10.1002\/jor.25717","type":"journal-article","created":{"date-parts":[[2023,10,9]],"date-time":"2023-10-09T18:50:29Z","timestamp":1696877429000},"page":"588-597","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Subacromial contact after acromioplasty in the rotator cuff deficient shoulder"],"prefix":"10.1002","volume":"42","author":[{"given":"Laura","family":"Gatto","sequence":"first","affiliation":[{"name":"Department of Biomedical Engineering University of Melbourne Parkville Victoria Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ashen","family":"Fernando","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering University of Melbourne Parkville Victoria Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Minoo","family":"Patel","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Epworth Healthcare Richmond Victoria Australia"},{"name":"Department of Anatomy and Cell Biology University of Melbourne Parkville Victoria Australia"},{"name":"School of Health and Biomedical Sciences RMIT University Melbourne Victoria Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Angus","family":"Yeung","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering University of Melbourne Parkville Victoria Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0559-7569","authenticated-orcid":false,"given":"David C.","family":"Ackland","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering University of Melbourne Parkville Victoria Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,10,26]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0268-0033(03)00047-0"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinbiomech.2010.08.001"},{"key":"e_1_2_7_4_1","first-page":"765","article-title":"Impingement syndrome of the shoulder","volume":"114","author":"Garving C","year":"2017","journal-title":"Dtsch Arztebl 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