{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T23:35:28Z","timestamp":1787614528009,"version":"build-2736575974"},"reference-count":33,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2012,11,11]],"date-time":"2012-11-11T00:00:00Z","timestamp":1352592000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of this study was to report the survival analysis of partial lateral facetectomy and Insall's procedure in patients with isolated patellofemoral osteoarthritis, and to assess the risk and protective factors for failure of this procedure.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>From 1992 to 2004, all subjects with isolated patellofemoral osteoarthritis who met the inclusion criteria and underwent this procedure were enrolled. Risk and protective factors for failure (failure considered as the need for total knee arthroplasty) were assessed by comparing obtained baseline data between failed and non\u2010failed cases. Eighty\u2010seven cases (mean (SD) age 61.8 (7.7) years, mean (SD) follow\u2010up 9.6 (3.2) years) were included.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Twenty\u2010three failed cases were found. Mean (SD) survival time was 13.6 (0.5) years. At 13 years (last failure case), the cumulative survival was 59.3 %. Baseline medial tibiofemoral pain, genu flexum, and worst grade of tibiofemoral osteoarthritis were significant risk factors for failure (<jats:italic>p<\/jats:italic> &lt; 0.0001, <jats:italic>p<\/jats:italic> = 0.02, <jats:italic>p<\/jats:italic> &lt; 0.0001, respectively). In contrast, higher anatomical (<jats:italic>p<\/jats:italic> = 0.02) and total (<jats:italic>p<\/jats:italic> = 0.03) knee society score (KSS) scores, absence of knee effusion (<jats:italic>p<\/jats:italic> = 0.03), higher value of the Caton\u2013Deschamps index (<jats:italic>p<\/jats:italic> = 0.03), and lateral position of the patella (<jats:italic>p<\/jats:italic> = 0.01) were all protective factors against failure.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The treatment for isolated patellofemoral osteoarthritis through partial lateral facetectomy and Insall's procedure demonstrated good long\u2010term survival. The presence of preoperative medial tibiofemoral pain, genu flexum, and incipient tibiofemoral osteoarthritis increased the risk of failure of this procedure. In contrast, higher anatomical and total KSS scores, absence of knee effusion, higher value of the Caton\u2013Deschamps index, and lateral position of the patella were found to protect against failure.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Prospective case series, Level IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-012-2286-x","type":"journal-article","created":{"date-parts":[[2012,11,10]],"date-time":"2012-11-10T08:01:54Z","timestamp":1352534514000},"page":"88-96","source":"Crossref","is-referenced-by-count":21,"title":["Partial lateral facetectomy plus Insall's procedure for the treatment of isolated patellofemoral osteoarthritis: survival analysis"],"prefix":"10.1002","volume":"22","author":[{"given":"Ferran","family":"Montserrat","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery Hospital de l'Esperan\u00e7a \u2010 Parc de Salut Mar Parc de Salut Mar. Av. Sant Josep de la Muntanya, 12 6th floor 08024 Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eduard","family":"Alentorn\u2010Geli","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Hospital de l'Esperan\u00e7a \u2010 Parc de Salut Mar Parc de Salut Mar. Av. Sant Josep de la Muntanya, 12 6th floor 08024 Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vicente","family":"Le\u00f3n","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Hospital de la Vega Lorenzo Guirao Ctra. de Abar\u00e1n, s\/n 30530 Cieza Murcia Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alberto","family":"Gin\u00e9s\u2010Cespedosa","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Hospital de l'Esperan\u00e7a \u2010 Parc de Salut Mar Parc de Salut Mar. Av. Sant Josep de la Muntanya, 12 6th floor 08024 Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pau","family":"Rigol","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Hospital de l'Esperan\u00e7a \u2010 Parc de Salut Mar Parc de Salut Mar. Av. 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