{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,1]],"date-time":"2026-08-01T09:44:39Z","timestamp":1785577479393,"version":"3.56.0"},"reference-count":50,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,3,17]],"date-time":"2024-03-17T00:00:00Z","timestamp":1710633600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Background: Concomitant glenohumeral pathologies may be present in patients with acromioclavicular joint (ACJ) dislocations. This study aims to record and compare the prevalence and treatment of CGP in cases with acute and chronic ACJ dislocations. Methods: This retrospective cross-sectional binational, bicentric study included patients that underwent arthroscopically assisted stabilization for acute (group A) and chronic (group C) ACJ dislocations. Intraoperatively, CGPs and eventual treatments (debridement and reconstructive measures) were recorded. Results: The study included 540 patients (87% men; mean age 39.4 years), with 410 (75.9%) patients in group A and 130 (24.1%) in group C. Patients in group C were older (p &lt; 0.001). The CGP prevalence was 30.7%, without a difference between groups A and C (p = 0.19). Supraspinatus tendon (SSP) and labral lesions were most common. Within group C, CGPs were more prevalent in surgery-na\u00efve patients (p = 0.002). Among 49 patients with previous surgical treatment, CGPs tended to be more common in patients with prior open surgery than arthroscopically assisted surgery (p = 0.392). Increased CGP prevalence was associated with higher age (r = 0.97; p = 0.004) (up to 63% in the oldest age group, but also 17% for youngest age group) and higher in cases with Rockwood type-IIIB injuries compared to type-V injuries (p = 0.028), but type-IIIB injuries included more group C cases (p &lt; 0.001). The most frequently found CGPs were treated by debridement rather than reconstructive interventions (SSP and labrum: p &lt; 0.001, respectively). Conclusions: This study shows that one in three patients with ACJ instabilities has a CGP, especially elderly patients. Most of the CGPs were treated by debridement rather than constructive interventions.<\/jats:p>","DOI":"10.3390\/jcm13061723","type":"journal-article","created":{"date-parts":[[2024,3,18]],"date-time":"2024-03-18T04:25:15Z","timestamp":1710735915000},"page":"1723","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Concomitant Glenohumeral Pathologies in Patients with Acromioclavicular Joint Dislocations: How Do Acute and Chronic Instabilities Differ?"],"prefix":"10.3390","volume":"13","author":[{"given":"Philipp","family":"Vetter","sequence":"first","affiliation":[{"name":"Department of Traumatology, University Hospital Zurich, R\u00e4mistrasse 100, 8091 Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manije","family":"Massih","sequence":"additional","affiliation":[{"name":"Department of Locomotive Surgery, Vivantes Clinic, Neue Bergstrasse 6, 13585 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frederik","family":"Bellmann","sequence":"additional","affiliation":[{"name":"Department of Shoulder and Elbow Surgery, Schulthess Clinic, Lengghalde 2, 8008 Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Larissa","family":"Eckl","sequence":"additional","affiliation":[{"name":"Department of Shoulder and Elbow Surgery, Schulthess Clinic, Lengghalde 2, 8008 Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philipp","family":"Moroder","sequence":"additional","affiliation":[{"name":"Department of Shoulder and Elbow Surgery, Schulthess Clinic, Lengghalde 2, 8008 Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asimina","family":"Lazaridou","sequence":"additional","affiliation":[{"name":"Department of Shoulder and Elbow Surgery, Schulthess Clinic, Lengghalde 2, 8008 Zurich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Markus","family":"Scheibel","sequence":"additional","affiliation":[{"name":"Department of Shoulder and Elbow Surgery, Schulthess Clinic, Lengghalde 2, 8008 Zurich, Switzerland"},{"name":"Center for Musculoskeletal Surgery, Charite-Universitaetsmedizin, Augustenburger Platz 1, 13353 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1016\/S1058-2746(05)80063-1","article-title":"Incidence and causes of shoulder girdle injuries in an urban population","volume":"4","author":"Nordqvist","year":"1995","journal-title":"J. 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