{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T12:19:57Z","timestamp":1792498797742,"version":"4.5.0"},"reference-count":26,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2023,6,20]],"date-time":"2023-06-20T00:00:00Z","timestamp":1687219200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2023,6,20]],"date-time":"2023-06-20T00:00:00Z","timestamp":1687219200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"},{"start":{"date-parts":[[2023,6,20]],"date-time":"2023-06-20T00:00:00Z","timestamp":1687219200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springernature.com\/gp\/researchers\/text-and-data-mining"}],"funder":[{"DOI":"10.13039\/501100003787","name":"Natural Science Foundation of Hebei Province","doi-asserted-by":"publisher","award":["H2022206557"],"award-info":[{"award-number":["H2022206557"]}],"id":[{"id":"10.13039\/501100003787","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003787","name":"Natural Science Foundation of Hebei Province","doi-asserted-by":"publisher","award":["H2022206557"],"award-info":[{"award-number":["H2022206557"]}],"id":[{"id":"10.13039\/501100003787","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2023,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of this study was to evaluate the clinical outcomes of medial patellofemoral ligament (MPFL) reconstruction combined with derotational distal femur osteotomy in patients with recurrent patellar dislocation who had excessive femoral anteversion angle and trochlear dysplasia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Between 2015 and 2020, 64 patients (64\u00a0knees) with recurrent patellar dislocation, who had excessive femoral anteversion angle (\u2265\u200925\u00b0) and trochlear dysplasia and were surgically treated using derotational distal femur osteotomy and MPFL reconstruction, were eligible for this retrospective study. These patients were assigned to two groups according to the grade of trochlear dysplasia. Group A (type A trochlear dysplasia, <jats:italic>n<\/jats:italic>\u2009=\u200933) and Group B (type B, C, D trochlear dysplasia, <jats:italic>n<\/jats:italic>\u2009=\u200931). Preoperative and postoperative patellar tilt angle (PTA), Caton\u2013Deschamps index (CD\u2010I), tibial tubercle\u2013trochlear groove (TT\u2013TG) distance and femoral anteversion angle were evaluated. Patient outcomes were assessed using the preoperative and postoperative International Knee Documentation Committee (IKDC) score, Kujala score, Lysholm score, Tegner score, and visual analog scale (VAS) score.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 64 patients (64\u00a0knees) were evaluated in this study, with a mean follow\u2010up period of 28.4\u2009\u00b1\u20093.6\u00a0months. There were no cases of wound infection, osteotomy site fractures, deep venous thrombosis of the lower extremities, or re\u2010dislocation in the two groups during the postoperative follow\u2010up period. All patients returned to full extension and flexion. The postoperative Tegner score, Lysholm score, Kujala score, IKDC score, VAS score, PTA, CD\u2010I, TT\u2013TG distance, and femoral anteversion angle were significantly improved compared with the preoperative status (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). There was no significant difference between the two groups (n.s.).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>MPFL reconstruction combined with derotational distal femur osteotomy showed satisfactory clinical outcomes during follow\u2010up in patients with recurrent patellar dislocation who had excessive femoral anteversion angle and trochlear dysplasia. Even patients with high\u2010grade trochlear dysplasia showed satisfactory results. For those patients, additional surgery is not necessary.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Level III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-023-07476-y","type":"journal-article","created":{"date-parts":[[2023,6,20]],"date-time":"2023-06-20T13:02:01Z","timestamp":1687266121000},"page":"4347-4354","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Derotational distal femur osteotomy combined with medial patellofemoral ligament reconstruction yields satisfactory results in recurrent patellar dislocation with excessive femoral anteversion angle and trochlear dysplasia"],"prefix":"10.1002","volume":"31","author":[{"given":"Kezhen","family":"Zhou","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiwen","family":"Sun","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ao","family":"Feng","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hailong","family":"Guo","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ran","family":"Sun","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yingzhen","family":"Niu","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Liu","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaofeng","family":"Wang","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Third Hospital of Hebei Medical University 050051 Shijiazhuang Hebei 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November 2022","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"1 June 2023","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"20 June 2023","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"The study was approved by the Academic Ethics Committee of the Third Hospital of Hebei Medical University.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"All patients provided informed consent.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}