Cemented total knee replacement in patients with osteoarthritis: a five-year follow-up study using a prosthesis allowing both retention and resection of the posterior cruciate ligament

Two hundred and twenty five osteoarthritic patients underwent primary cemented TKR and were followed prospectively for at least 5 years. Surgeries were stratified into PCL retaining (121 knees) (Group A), and Post Stabilized (84 knees) (Group B). The Genesis prothesis was used in all cases. Mean ROM at five years was 117^° in Group A and 114^° in Group B. 72% of Group A and 62% of Group B patients could reciprocate on stairs. Over 95% of the knees in both groups had either no pain or, at worst, barometric discomfort. 96% of Group A and 98% of Group B knees were rated as good or excellent (Knee Society Rating System). Kaplan Meyer survivorship was 97% in Group A and 98% in Group B. There was no statistical difference in any of the parameters measured whether the PCL was retained or sacrificed in these two groups.