{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,6]],"date-time":"2025-11-06T12:08:09Z","timestamp":1762430889457,"version":"build-2065373602"},"reference-count":35,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2014,8,1]],"date-time":"2014-08-01T00:00:00Z","timestamp":1406851200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2014,8,1]],"date-time":"2014-08-01T00:00:00Z","timestamp":1406851200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2014,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of this study was to investigate outcomes of surgical treatment in patients with symptomatic chronic patellar lateral subluxation with tilting.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty\u2010two patients (38\u00a0knees) underwent arthroscopic lateral release and mini\u2010open advancement of medial retinacular flap for the treatment of symptomatic chronic patellar lateral subluxation with tilting with a mean follow\u2010up of 52.0 \u00b1 11.4\u00a0months. The mean age at surgery was 24.7 \u00b1 8.8 years, and the duration of symptoms was 4.8 \u00b1 4.1 years. The patellofemoral function of the knee was evaluated before surgery and at the clinical follow\u2010up using the Kujala functional score.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Thirty\u2010six knees (95 %) showed excellent or good results after surgery. Two knees with grade IV chondromalacia of the patella had fair results with persistent apprehension signs and persistent pain. The Kujala patellofemoral functional scores improved by an average of 20.9 points from a mean value of 71.8 \u00b1 12.1 preoperatively to 92.7 \u00b1 10.7 postoperatively (<jats:italic>P<\/jats:italic> &lt; 0.01). Radiographically, there were significant improvements in congruence angle from 23.4\u00b0 \u00b1 7.9\u00b0 preoperatively to \u22127.2\u00b0 \u00b1 6.4\u00b0 postoperatively (<jats:italic>P<\/jats:italic> &lt; 0.01) and in the lateral patellofemoral angle from \u22128.6\u00b0 \u00b1 6.8\u00b0 preoperatively to 6.3\u00b0 \u00b1 4.2\u00b0 postoperatively (<jats:italic>P<\/jats:italic> &lt; 0.01).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Medial retinacular flap advancement and arthroscopic lateral release offer a promising treatment for symptomatic chronic patellar lateral subluxation and tilt without frank traumatic episode.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Retrospective study, Level IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-014-3201-4","type":"journal-article","created":{"date-parts":[[2014,7,31]],"date-time":"2014-07-31T10:39:17Z","timestamp":1406803157000},"page":"2499-2504","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Medial retinacular flap advancement and arthroscopic lateral release for symptomatic chronic patellar lateral subluxation with tilting"],"prefix":"10.1002","volume":"22","author":[{"given":"Chian\u2010Her","family":"Lee","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery School of Medicine College of Medicine Taipei Medical University and Hospital Taipei Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chia\u2010Chun","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Tri\u2010Service General Hospital National Defense Medical Center No. 325, Sec. 2, 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