{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,25]],"date-time":"2025-10-25T14:16:22Z","timestamp":1761401782105,"version":"build-2065373602"},"reference-count":38,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2016,5,4]],"date-time":"2016-05-04T00:00:00Z","timestamp":1462320000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2016,5,4]],"date-time":"2016-05-04T00:00:00Z","timestamp":1462320000000},"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":[[2016,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of this study was to compare the midterm outcomes between fixed and mobile ultra\u2010congruent (UC) bearings in total knee arthroplasty (TKA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This is a retrospective matched\u2010pairs case\u2013control study of patients who underwent primary navigation\u2010assisted TKA with a minimum 5\u2010year follow\u2010up. A total of 182 cases involved the fixed UC bearing system as Group 1 and 101 cases involved mobile UC bearing system group as Group 2. After 1:1\u00a0matching, 73\u00a0knees in each group were enrolled. Clinical and radiographic outcomes were evaluated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The overall survival was 143 of 146 cases (97.9 %) at final follow\u2010up, and 72 of 73 cases (96.3 %) in Group 1 and 71 of 73 cases (95.8 %) in Group 2 at final follow\u2010up based on an endpoint of revision surgery. The reasons of revision TKA were periprosthetic fracture in Group 1, infection and bearing dislocation in Group 2. There was no statistical difference in Hospital for Special Surgery (HSS) scores, Knee Society Scores (KSS), WOMAC index score evaluations between groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study demonstrated that the fixed\u2010bearing UC prosthesis could provide satisfactory performance compared with that of the mobile\u2010bearing UC prosthesis with minimum 5\u2010year follow\u2010up. The fixed\u2010bearing UC prosthesis could be considered in navigation\u2010assisted TKA with theoretical advantages of UC design.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-016-4147-5","type":"journal-article","created":{"date-parts":[[2016,5,4]],"date-time":"2016-05-04T03:53:06Z","timestamp":1462333986000},"page":"3466-3473","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Comparison of ultra\u2010congruent mobile\u2010 and fixed\u2010bearing navigation\u2010assisted total knee arthroplasty with minimum 5\u2010year follow\u2010up"],"prefix":"10.1002","volume":"24","author":[{"given":"Seong Hwan","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery Chung\u2010Ang University College of Medicine 102 Heukseok\u2010ro, Dongjak\u2010ku 156\u2010755 Seoul South 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