{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T13:27:26Z","timestamp":1785418046869,"version":"3.56.0"},"reference-count":37,"publisher":"SAGE Publications","issue":"11","license":[{"start":{"date-parts":[[2007,11,1]],"date-time":"2007-11-01T00:00:00Z","timestamp":1193875200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[2007,11]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Proximal or distal realignment procedures have long been selected as treatment for recurrent patellar dislocation, but associated knee osteoarthritis has been a substantial problem that leads to poor results. A new approach, medial patellofemoral ligament reconstruction, has recently started, but there have been no reports on the long-term follow-up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Hypothesis<\/jats:title>\n                    <jats:p>Anatomical medial patellofemoral ligament reconstruction can lead to satisfactory long-term outcome and a low association rate of knee osteoarthritis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design<\/jats:title>\n                    <jats:p>Case series; Level of evidence, 4.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Twenty-four knees from 22 patients who underwent medial patellofemoral ligament reconstruction for recurrent patellar dislocation were reviewed at a mean follow-up of 11.9 years (range, 8.5-17.2 years). A lateral release was done on 14 of 24 knees. The clinical\/physical outcome and the association of knee osteoarthritis were investigated. Patellofemoral and femorotibial osteoarthritis on the radiographs was evaluated using the Crosby\/Insall and the Kellgren\/Lawrence grading systems.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>According to the Crosby\/Insall criteria, 11 knees (46%) were classified as excellent, 10 (42%) as good, 3 (12%) as fair\/poor, and none as worse at follow-up. Further lateral subluxation or dislocation occurred in only 2 knees. The mean Kujala score improved significantly from 63.2 points preoperatively to 94.2 points at follow-up (P &lt; .0001). According to the Crosby\/Insall grading system, patellofemoral osteoarthritis was none to mild in 23 of the 24 knees and moderate in 1 knee, preoperatively. At the final follow-up, 21 knees were none to mild, and 3 knees were moderate. There were only 2 knees that had definite progression from none to mild to a moderate grade.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The association of definite knee osteoarthritis in medial patellofemoral ligament reconstruction with or without lateral release was small in the long-term follow-up. The conclusion is that medial patellofemoral ligament reconstruction not only prevents further patellar dislocation but also shows no or only slight progression of knee osteoarthritis.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0363546507306161","type":"journal-article","created":{"date-parts":[[2007,8,27]],"date-time":"2007-08-27T20:25:03Z","timestamp":1188246303000},"page":"1851-1858","source":"Crossref","is-referenced-by-count":170,"title":["Long-term Follow-up and Knee Osteoarthritis Change after Medial Patellofemoral Ligament Reconstruction for Recurrent Patellar Dislocation"],"prefix":"10.1177","volume":"35","author":[{"given":"Eiki","family":"Nomura","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Saitama Municipal Hospital, Saitama, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Motoyasu","family":"Inoue","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Isehara-Kyodo Hospital, Isehara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigeru","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics and Rehabilitation Medicine, Fukui University School of Medicine, Fukui, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2007,11,1]]},"reference":[{"key":"bibr1-0363546507306161","unstructured":"AgliettiP., BuzziR., InsallJN Disorders of the patellofemoral joint. 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