Clinical and functional outcome of posterior cruciate ligament retaining total knee arthroplasty

Abstract

Introduction: Posterior Cruciate Ligament (PCL) retention achieves an increased potential range of motion by effective femoral roll back and a relatively flat tibial articular surface in Total Knee Arthroplasty.Objective: To study the clinical and functional outcome of patients who undergo posterior cruciate ligament (PCL) retaining total knee arthroplasty.Methods: The purpose was to determine the clinical and functional outcome during the acute and midterm (One year) follow up after posterior cruciate ligament retaining total knee arthroplasty (CR TKA). Thirty patients scheduled for CR TKR were evaluated preoperatively, 1 month, 3 months, 6 months and 12 months postoperatively using the knee society clinical and functional scores.Results: The mean pre- operative knee society clinical and functional scores of the 30 cases were 36.5 (Ranging from 20 to 64) and 31.8 respectively. The mean knee society clinical score at the 1st follow up was 76.5, at the 2nd follow up was 83.5, 3rd follow up was 88.6 and 4th follow up was 92.4. The mean knee society functional score at the 1st follow up was 72.5.5, at the 2nd follow up was 80.5, 3rd follow up was 87.5 and 4th follow up was 90.6.Conclusion: We found out that twenty nine out of thirty patients undergoing TKR had excellent clinical and functional scores; one patient had good functional scores at the end of one year. More than 90% of patients in our study had excellent functional scores at the end of one year. Posterior cruciate ligament retaining total knee arthroplasty is a good surgical option for osteoarthritis of knee.