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The prevalence of MRI-defined OA was described based on published criteria by Hunter and colleagues. Logistic regression was used to explore the association between MRI-defined OA and the Luyten classification criteria for early-stage clinical knee OA.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Across participants, cartilage loss was the most prevalent MRI-defined OA feature in both the tibiofemoral (61%) and the patellofemoral (51%) joint. Osteophytes were more common in the tibiofemoral (52%) than patellofemoral (28%) joint of participants. Bone marrow lesions (tibiofemoral, 26%; patellofemoral, 13%), meniscal tears (42%), and meniscal extrusion (18%) were also observed. Based on MRI-defined criteria, 71 (39%) participants were characterized with OA (tibiofemoral, n = 58 [32%]; patellofemoral, n = 34 [18%]). No association was observed between MRI-defined OA and the Luyten classification criteria for early-stage clinical knee OA.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Over half of symptomatic young adults 9 to 36 months post-ACLR demonstrated OA features on MRI, with the tibiofemoral joint more commonly affected than the patellofemoral joint. More than one-third of participants met the criteria for MRI-defined OA. A lack of association between MRI and clinical definitions of early-stage knee OA suggests a possible symptom-structure discordance in the early stages of post-traumatic OA disease.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671261455852","type":"journal-article","created":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T13:50:39Z","timestamp":1783432239000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Knee Osteoarthritis on MRI in Symptomatic Young Adults After ACL Reconstruction From the SUPER-Knee Trial: Feature Prevalence and Association With Early-Stage Clinical Osteoarthritis Criteria"],"prefix":"10.1177","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-6481-041X","authenticated-orcid":false,"given":"Jamon L.","family":"Couch","sequence":"first","affiliation":[{"name":"La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human 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