TKA WITH FIXED OR MOBILE BEARINGS IN THE SAME SYSTEM: LONG TERM RESULTS WITH SPECIAL CONSIDERATIONS TO THE PATELLA

Purpose: To present 8 year results of a prospective clinical study of 246 patients with the Innex total knee system performed between 2000 and 2002.Methods: 88 men and 158 women aged between 39.3 to 92.8 (mean, 71.2) years who underwent primary TKAs using the Innex prosthesis were followed up for up to 8 years. TKA was performed using ultracongruent mobile or fixed bearings, both groups with or without patella replacement. All TKAs were cemented. Patients were assessed using the Knee Society Clinical Rating System.Results: The mean ROM improved from preoperative 105.54° up to 110.05° at the last FUP. The mean total Knee Society Score before surgery was 112.04 (range, 52–160) and improved post op up to 179.49 (55–200). There were 2 postraumatic patella fractures (14 and 49 months after surgery), 2 patients without patella replacement showed peripatellar pain syndrome and femoropatellar overload. One became fine after conservative treatment, the other patient hat patella replacement 55 months after initial ...