{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T12:44:44Z","timestamp":1787748284242,"version":"build-2784847793"},"reference-count":31,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2026,2,8]],"date-time":"2026-02-08T00:00:00Z","timestamp":1770508800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,2,8]],"date-time":"2026-02-08T00:00:00Z","timestamp":1770508800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100012446","name":"akershus universitetssykehus","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100012446","id-type":"DOI","asserted-by":"publisher"}]},{"name":"The Norwegian Association of Sports Medicine Research grant","award":["2015"],"award-info":[{"award-number":["2015"]}]},{"DOI":"10.13039\/501100011594","name":"sophies minde ortopedi","doi-asserted-by":"publisher","award":["2011"],"award-info":[{"award-number":["2011"]}],"id":[{"id":"10.13039\/501100011594","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008556","name":"aase bye og trygve j. b. hoffs fond til vitenskapelig, medisinsk forskning","doi-asserted-by":"publisher","award":["2011"],"award-info":[{"award-number":["2011"]}],"id":[{"id":"10.13039\/501100008556","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100020560","name":"south east regional health authority","doi-asserted-by":"publisher","award":["2016094"],"award-info":[{"award-number":["2016094"]}],"id":[{"id":"10.13039\/501100020560","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Medial patellofemoral ligament reconstruction (MPFL-R) is the primary surgical intervention for recurrent lateral patellar dislocation (LPD). Isolated MPFL-R is recommended for patients without anatomic high-risk factors that predispose to further dislocations.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To compare instability recurrence in patients with recurrent LPD without underlying anatomic risk factors treated with MPFL-R versus active rehabilitation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Randomized controlled clinical trial; Level of evidence, 1.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Patients aged 12 to 30 years with recurrent LPD and no underlying anatomic high-risk factors for further dislocations\u2014specifically, no severe trochlear dysplasia (Dejour D) and a tibial tuberosity\u2013trochlear groove distance \u226420 mm on computed tomography\u2014were randomized to receive knee arthroscopy with isolated MPFL-R followed by active rehabilitation (MPFL group) or knee arthroscopy without reconstruction followed by active rehabilitation (control group). The primary outcome was subjective persistent patellar instability at 3 years. Knee function at baseline and 1 and 3 years was assessed by the following patient-reported outcome measure (PROM) scores: Knee injury and Osteoarthritis Outcome Score (KOOS), Kujala Knee Score, Cincinnati Knee Rating System, and Noyes Sports Activity Rating Scale.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Between 2010 and 2019, 61 patients (72.1% female) were included in the study and randomized, with 30 assigned to the MPFL group and 31 to the control group. At 3-year follow-up, subjective persistent patellar instability was reported by 5 patients in the MPFL group (16.7%) versus 15 patients in the control group (53.6%), corresponding to an odds ratio of 5.8 (95% CI, 1.7-19.4;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = .003). Both groups reported significant improvements in all PROM scores from baseline to 3 years. However, no significant differences in PROM scores were observed between the groups at any follow-up time point.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Isolated MPFL-R was more effective than active rehabilitation alone in preventing patellar instability after 3 years.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial Registration:<\/jats:title>\n                    <jats:p>ClinicalTrials.org (NCT02263807).<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/03635465261416931","type":"journal-article","created":{"date-parts":[[2026,2,8]],"date-time":"2026-02-08T16:08:11Z","timestamp":1770566891000},"page":"773-779","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Medial Patellofemoral Ligament Reconstruction vs Nonoperative Treatment for Recurrent Lateral Patellar Dislocation: Three-Year Results From a Randomized Controlled Trial"],"prefix":"10.1177","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7467-7757","authenticated-orcid":false,"given":"Truls Martin","family":"Straume-N\u00e6sheim","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Akershus University Hospital, L\u00f8renskog, Norway"},{"name":"Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7674-1572","authenticated-orcid":false,"given":"Per-Henrik","family":"Randsborg","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Akershus University Hospital, L\u00f8renskog, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-5640-7315","authenticated-orcid":false,"given":"Tina L\u00f8kken","family":"Nilsg\u00e5rd","sequence":"additional","affiliation":[{"name":"Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2337-0755","authenticated-orcid":false,"given":"Asbj\u00f8rn","family":"\u00c5r\u00f8en","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Akershus University Hospital, L\u00f8renskog, Norway"},{"name":"Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,2,8]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-013-2650-5"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-005-0015-4"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.3390\/children8060434"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.85B6.13730"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465251339822"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/ksa.12432"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1530\/EOR-2024-0179"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546519835800"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.3238\/arztebl.2020.0279"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s12178-019-09537-7"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmjopen-2023-072141"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1002\/ca.22710"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-8063(05)80366-4"},{"key":"e_1_3_2_15_2","doi-asserted-by":"crossref","unstructured":"Lampros RE Wiater AL Tanaka MJ. 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