{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T20:54:32Z","timestamp":1789937672450,"version":"4.0.1"},"reference-count":28,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2019,8,16]],"date-time":"2019-08-16T00:00:00Z","timestamp":1565913600000},"content-version":"vor","delay-in-days":15,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2019,8]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>To report the clinical outcomes of combined femoral derotation osteotomy and medial retinaculum plasty for recurrent patellar dislocation in patients with excessive femoral anteversion.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>From January 2015 to March 2018, 20 knees in 20 patients (18 female, 2 male) with a mean age of 21\u2009\u00b1\u20094.2\u2009years (range, 16 to 28\u2009years) were retrospectively reviewed. All patients had undergone femoral derotation osteotomy and medial retinaculum plasty for recurrent patellar dislocation and excessive femoral anteversion angle (FAA\u2009&gt;\u200925\u00b0). CT and X\u2010rays were used to assess the correction of the femoral anteversion angle, the tibia tuberosity\u2010trochlear groove (TT\u2010TG) distance, patellar tilt, and the congruence angle following the combinatory operations. Subjective scores, such as Kujala, International Knee Documentation Committee (IKDC), Tegner, and visual analogue scale (VAS) scores, were used to evaluate knee function preoperatively and postoperatively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>No recurrence of patellar dislocation occurred in these patients during an average of 18\u2009months (range, 12 to 23\u2009months) of follow\u2010up. The mean of the FAA was corrected to 15.80\u00b0\u2009\u00b1\u20093.58\u00b0 postoperatively compared with 31.42\u00b0\u2009\u00b1\u20094.95\u00b0 preoperatively (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001). The TT\u2010TG distance was decreased from 22.17\u2009\u00b1\u20095.28 mm before surgery to 19.42\u2009\u00b1\u20094.57 mm after surgery (<jats:italic>P<\/jats:italic> = 0.03). The patellar tilt and congruence angle were improved from 30.43\u00b0\u2009\u00b1\u20095.30\u00b0, 43.30\u00b0\u2009\u00b1\u200911.04\u00b0 to 15.80\u00b0\u2009\u00b1\u20093.94\u00b0, 16.64\u00b0\u2009\u00b1\u20099.98\u00b0, respectively (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001). The Kujala score was improved from 72.4\u2009\u00b1\u200919.90 before the surgery to 88.2\u2009\u00b1\u200912.25 after the surgery (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001). The IKDC score was improved from 70.56\u2009\u00b1\u200921.44 to 90.78\u2009\u00b1\u200914.32, and the VAS score was decreased from 4.23\u2009\u00b1\u20092.11 preoperatively to 1.27\u2009\u00b1\u20091.08 postoperatively (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001). No significant difference in Tegner score (5.46\u2009\u00b1\u20092.49 <jats:italic>vs<\/jats:italic> 5.79\u2009\u00b1\u20091.44) was found before and after the surgery (<jats:italic>P<\/jats:italic> = 0.2). Patients younger than 20\u2009years old had lower Kujala (83.46\u2009\u00b1\u200914.56 <jats:italic>vs<\/jats:italic>. 90.84\u2009\u00b1\u20097.74, <jats:italic>P<\/jats:italic> = 0.02) and IKDC (83.49\u2009\u00b1\u200917.35 <jats:italic>vs<\/jats:italic> 92.46\u2009\u00b1\u20099.28, <jats:italic>P<\/jats:italic> = 0.04) scores than those older than 20\u2009years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Good knee function, pain relief, and improved patellofemoral congruence were achieved with the combined femoral derotation osteotomy and medial retinaculum plasty. The combined operations serve as an ideal treatment for recurrent patellar dislocation and address the primary risk factors.<\/jats:p><\/jats:sec>","DOI":"10.1111\/os.12500","type":"journal-article","created":{"date-parts":[[2019,8,16]],"date-time":"2019-08-16T12:48:49Z","timestamp":1565959729000},"page":"578-585","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":46,"title":["<scp>G<\/scp>ood Outcomes of Combined Femoral Derotation Osteotomy and Medial Retinaculum Plasty in Patients with Recurrent Patellar Dislocation"],"prefix":"10.1111","volume":"11","author":[{"given":"Guang\u2010min","family":"Yang","sequence":"first","affiliation":[{"name":"Department of Joint Surgery Third Hospital of Hebei Medical University  Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan\u2010yang","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Radiology Third Hospital of Hebei 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