{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T07:50:26Z","timestamp":1777881026271,"version":"3.51.4"},"reference-count":44,"publisher":"SAGE Publications","issue":"12","license":[{"start":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T00:00:00Z","timestamp":1764547200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T00:00:00Z","timestamp":1764547200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100004826","name":"natural science foundation of beijing municipality","doi-asserted-by":"publisher","award":["7244358"],"award-info":[{"award-number":["7244358"]}],"id":[{"id":"10.13039\/501100004826","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Journal of Sports Medicine"],"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Acromioclavicular (AC) dislocations are common shoulder injuries. Coracoid tunnel\u2013free coracoclavicular (CC) sling fixation techniques using either allograft or Tightrope represent viable treatment options.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To (1) compare the clinical outcomes of 2 different coracoid tunnel\u2013free CC sling fixation techniques (allograft vs Tightrope) in treating patients with acute Rockwood type 3 and 5 AC dislocations for a minimum of 24-month follow-up and to (2) identify risk factors for loss of reduction (LOR).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Cohort study; Level of evidence, 3.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>We compared patients treated for AC dislocations using CC sling fixation with either allograft or Tightrope. Functional outcomes (visual analog scale, American Shoulder and Elbow Surgeons score, Constant score, and return to sport) were recorded at 12- and 24-month follow-ups. CC distance (CCD) and complications were evaluated at 3, 6, and 12 months postoperatively. Univariate and multivariate analyses were performed to identify risk factors for LOR.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Of the 50 patients included, 23 were in the allograft group and 27 in the Tightrope group. Both groups demonstrated significant improvements in functional outcome postoperatively, without significant intergroup differences. Although CCD significantly decreased in both groups, CCD in the Tightrope group was significantly smaller at each follow-up. Compared with CCD immediately after surgery, CCD remained stable in the Tightrope group at 3-month follow-up (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .13), whereas it significantly increased in the allograft group (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .004.). The allograft group exhibited a significantly higher rate of LOR than the Tightrope group (43% vs 15%;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .03), heterotopic ossification (48% vs 11%;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .005), and greater tunnel widening (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001). The trapezoid tunnel ratio was identified as an independent risk factor for LOR in the allograft group (odds ratio, 0.033;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .017).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Despite similar functional outcome, CC sling fixation with Tightrope demonstrated superior maintenance of CCD in the early postoperative stage, a significantly lower rate of LOR and heterotopic ossification and less tunnel widening compared with allograft. Malposition of the trapezoid tunnel was an independent risk factor for LOR in the allograft group.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671251383092","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T18:25:32Z","timestamp":1764959132000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Comparative Study of 2 Different Arthroscopic Coracoid Tunnel\u2013free Coracoclavicular Sling Fixation Techniques for the Treatment of Acute High-Grade Acromioclavicular Dislocation"],"prefix":"10.1177","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0456-9686","authenticated-orcid":false,"given":"Jianhao","family":"Xie","sequence":"first","affiliation":[{"name":"Sports Medicine Service, Beijing Jishuitan Hospital Affiliated to Capital Medical University, Beijing, China"},{"name":"Sports Medicine Service, Peking University Fourth School of 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Hospital Affiliated to Capital Medical University, Beijing, China"},{"name":"Sports Medicine Service, Peking University Fourth School of Clinical Medicine, Beijing Jishuitan Hospital, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pu","family":"Zhang","sequence":"additional","affiliation":[{"name":"Sports Medicine Service, Beijing Jishuitan Hospital Affiliated to Capital Medical University, Beijing, China"},{"name":"Sports Medicine Service, Peking University Fourth School of Clinical Medicine, Beijing Jishuitan Hospital, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chunyan","family":"Jiang","sequence":"additional","affiliation":[{"name":"Sports Medicine Service, Beijing Jishuitan Hospital Affiliated to Capital Medical University, Beijing, China"},{"name":"Sports Medicine Service, Peking University Fourth School of Clinical Medicine, Beijing Jishuitan Hospital, Beijing, China"},{"name":"Beijing Research Institute of 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