Clinical and Radiological Results of Total Knee Arthroplasty with a System of Asymmetric Tibial Tray

ABSTRACT

PURPOSE: PURPOSE of this study was to evaluate the clinical and radiological results and complications of total knee arthroplasty(TKA) using the systems including an asymmetric tibial tray and a deep trochlear-grooved femoral component. MATERIALS AND METHODS: Ninety-five total knee replacement arthroplasties(68 patients) with the implant system, which has the asymmetric tibial tray and a deep trochlear grooved femoral component were analyzed clinically and radiologically. Retrograde analysis with the Knee Society clinical rating system, roentgenographic evaluation and scoring system and the Hospital for Special Surgery(HSS) score were done. The patients were average 66 years old and the follow-up period was 23month(range, 12 month to 49 month). RESULTS: Knee score was improved from 43 points to 90 points. Function score was improved from 47 points to 85 points. HSS score was improved 57 points to 89 points. Tibio-femoral angle was improved from varus 4o to valgus 5o. In last clinic visit, there was no case which had progressive radiolucent line or above 4 points in radiolucent score except one septic loosening case. There was no case of patellofemoral complications, including patellofemoral instability, patellar fracture, patellar component failure, patellar component loosening, and patellar clunk syndrome. CONCLUSTION The TKA in this series showed excellent clinical and radiological results and low inci- dence of patellar complication.