TOTAL KNEE ARTHROPLASTY WITH A MOBILE TIBIAL BEARING. MEDIUM-TERM FOLLOW-UP RESULTS

Objective Evaluation of mid term follow up results of the application of a total knee replacement with a mobile tibial bearing design Methods Ninety six patients (107 knees) were submitted to total knee Arthroplasty performed with a model of prosthesis with rotating mobility in the tibial component The patients were evaluated after a mean follow up of 52 7 months standard deviation 21 94 (minimum 24 months and maximum 120 months) through the Knee Society Clinical Rating System (KSCRS) with a mean outcome of 78 22 points Results The complications that occurred immediately after or during the surgery included one wound dehiscence with spontaneous healing two patellar fractures one fracture of the medial condyle of the femur three peroneal nerve impairments and one sympathetic reflex nervous distrophy Subsequent complications were one patellar fracture one distal fracture of the femur four aseptic loosenings and four deep joint infections which required arthroplastic revisions Conclusion With the exception of the cases requiring arthroplastic revision due to septic or aseptic loosening the authors conclude that the clinical and functional results obtained with Total Knee Replacement with a mobile bearing component in a mid term follow up were good