Clinical results of alumina medial pivot total knee arthroplasty at a minimum follow-up of ten years

Abstract Purpose The medial pivot total knee prosthesis with alumina ceramic femoral components was introduced to reproduce physiological knee kinematics and reduce polyethylene wear. The 5-year clinical outcomes of alumina medial pivot total knee arthroplasties (TKA) have previously been reported. The purpose of this study was to provide the longer-term clinical results at a minimum follow-up of 10 years. Methods The clinical results of 70 alumina medial pivot TKA in 51 consecutive patients, with a minimum follow-up period of 10 years, were evaluated. Results Mean follow-up was 11.8 years (range 10–13). Alumina medial pivot TKAs improved the patients' Knee Society knee scores, function scores, and postoperative ranges of motion compared with their pre-operative statuses ( P < 0.05 for each). Revision surgery was required in one knee due to a postoperative fracture of the tibial plateau after a fall that occurred 2 years postoperatively. Osteolysis and femoral component loosening was identified in one case after the initial 5-year time point of analysis. The survival rate was 99.1% at 10 years. Conclusions This study demonstrated excellent clinical results for patients receiving the alumina medial pivot prosthesis at a minimum follow-up period of 10 years.