O1473 LONG-TERM RESULTS OF MOBILE BEARING TKA. EVALUATION OF 457 CASES WITH 10 TO 13 YEAR FOLLOW-UP

Abstract

Aims: The purpose of this study was to evaluate the clinical outcome of 457 LCS mobile bearing TKA from one centre. Methods: From a cohort of over 3.500 mobile bearing TKA in one large center, 457 cases were performed more than 10 years ago (mean 11 years). Drop-out were 63 (13.8%) cases, 128 patients were known to have died and 63 (13.2%) cases could not be included leaving 86.2% that entered the study. Patient demographics included 76% females and 8% rheumatoids. There were 275 (60%) meniscal bearing and 182 rotating platform design components. The patella was resurfaced in 95 (21%) cases. Results: Preoperative KSS scores improved from a mean of 84 to 157 points and mean range of motion from 97 to 110 degrees postoperatively. Clinical scores were excellent or good in 88%, moderate in 10% and poor in 2%. Kaplan Meier survival analysis was 96.9% after a mean of 11 years taking any revision into account. Worst track record were polyethylene meniscal bearings with 91.2% and best the femoral component with 99.8% after a mean of 11 years. Other complications will be listed in depth. Conclusion: Best track record was noted with the all cruciate sacrificing rotating bearing device and worst with the ACL and PCL retaining meniscal bearing device. Patella also jeopardized the long-term results