{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T04:39:45Z","timestamp":1785818385298,"version":"3.56.0"},"reference-count":35,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2020,6,29]],"date-time":"2020-06-29T00:00:00Z","timestamp":1593388800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2020,6,29]],"date-time":"2020-06-29T00:00:00Z","timestamp":1593388800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2020,6,29]],"date-time":"2020-06-29T00:00:00Z","timestamp":1593388800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/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":[[2021,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The influence of closing wedge high tibial osteotomy (CW\u2010HTO) with high valgus correction on its survival is unclear. This study aimed to conduct a 15\u2010year follow\u2010up cohort study to estimate the long\u2010term survival rate of CW\u2010HTO. Factors related to poor outcomes were investigated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 159\u00a0knees in 123 patients were followed up, and 120\u00a0knees in 96 patients were enrolled for statistical analysis. Femorotibial angles were measured by standing anterior\u2013posterior radiographs of the knee. Clinical objective evaluation was performed by the Japanese orthopaedic association (JOA) score of the knee, and scores lower than 70 points defined the poor result (PR) group. The survival rate of OW\u2010HTO was estimated. Logistic regression analyses were performed to determine the risk factors for PR and conversion to total knee arthroplasty (TKA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 16\u00a0knees in 15 patients (13.3%) underwent TKA 14.0\u2009\u00b1\u20094.8 (4\u201020) years after CW\u2010HTO. The 5\u2010year survival rate was 99.2%, 10\u2010year was 96.7%, 15\u2010year was 92.5%, and 86.7% at final follow\u2010up (17.9 years). Based on the JOA score, 44 patients (35.8%) belonged to the PR group, and their risk factors were obesity (<jats:italic>p<\/jats:italic>\u2009=\u20090.018), low femorotibial angle (<jats:italic>p<\/jats:italic>\u2009=\u20090.019), low JOA score (<jats:italic>p<\/jats:italic>\u2009=\u20090.040), low knee extension angle (<jats:italic>p<\/jats:italic>\u2009=\u20090.045), and low knee flexion angle (<jats:italic>p<\/jats:italic>\u2009=\u20090.046).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The 15\u2010year survival rate of CW\u2010HTO was 92.5%. While higher scores of objective outcomes were kept over long\u2010term follow\u2010up, the risk factors for a worsening score or TKA conversion were obesity and severity of preoperative knee symptoms.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-020-06128-9","type":"journal-article","created":{"date-parts":[[2020,6,29]],"date-time":"2020-06-29T07:02:59Z","timestamp":1593414179000},"page":"3221-3228","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Long\u2010term survival rate of closing wedge high tibial osteotomy with high valgus correction: a 15\u2010year follow\u2010up study"],"prefix":"10.1002","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4859-8473","authenticated-orcid":false,"given":"Eiji","family":"Sasaki","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Hirosaki University Graduate School of Medicine 5 Zaifu\u2010cho 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Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tatsuro","family":"Saruga","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Hirosaki University Graduate School of Medicine 5 Zaifu\u2010cho 036\u20108562 Hirosaki Aomori Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroshi","family":"Kakizaki","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Orthopaedic Surgery Hirosaki National Hospital Hirosaki Japan"},{"name":"<!--<label>3<\/label>--> Nakazawa Sports Clinic Hachinohe Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasuyuki","family":"Ishibashi","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Hirosaki University Graduate School of Medicine 5 Zaifu\u2010cho 036\u20108562 Hirosaki Aomori 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participate"}},{"value":"All of the co-authors agreed with publishing this manuscript.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}}]}}