{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,13]],"date-time":"2025-11-13T12:23:57Z","timestamp":1763036637357,"version":"build-2065373602"},"reference-count":44,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2011,11,5]],"date-time":"2011-11-05T00:00:00Z","timestamp":1320451200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The medial pivot total knee prosthesis has been designed to reproduce physiological knee kinematics. It has been reported that alumina ceramic femoral components reduce polyethylene wear. Thus, medial pivot total knee prostheses with alumina ceramic femoral components were introduced. The purpose of this study was to evaluate the clinical results of patients who underwent newly introduced alumina medial pivot total knee arthroplasties (TKA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We evaluated the clinical results of 107 alumina medial pivot TKAs in 80 consecutive patients with a mean follow\u2010up period of 5 years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Alumina medial pivot TKAs provided significant improvements in the patients\u2019 Knee Society knee scores, function scores and post\u2010operative ranges of motion compared with their pre\u2010operative statuses (each, <jats:italic>P<\/jats:italic> &lt; 0.05). There was no statistical correlation between the change in maximum knee flexion and the increase in posterior condylar offset. Revision surgery was required in one knee due to a post\u2010operative fracture of the tibial plateau after a fall that occurred 2 years postoperatively. No knees had aseptic loosening, osteolysis, or ceramic fractures. The survival rate was 98.6% at 5 years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study demonstrates satisfactory mid\u2010term clinical results for patients receiving the alumina medial pivot prosthesis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Therapeutic study, Level IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-011-1734-3","type":"journal-article","created":{"date-parts":[[2011,11,4]],"date-time":"2011-11-04T07:22:28Z","timestamp":1320391348000},"page":"1514-1519","source":"Crossref","is-referenced-by-count":20,"title":["Mid\u2010term clinical results of alumina medial pivot total knee arthroplasty"],"prefix":"10.1002","volume":"20","author":[{"given":"Takahiro","family":"Iida","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Osaka City University Graduate School of Medicine 1\u20104\u20103 Asahi\u2010machi Abeno\u2010ku 545\u20108585 Osaka 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