We present the results of a retrospective study of 561 consecutive Total Knee replacements performed by one consultant between January 1990 and June 2000 on 456 patients. The groups included 500 PFC, 40 PROM and 21 Kinematic TKRs. These were assessed using two postal questionnaires, a clinical evaluation and radiographic investigation. 464 patients survived to follow-up of which 421 returned the questionnaires and 292 were seen in clinic. 89% had good to excellent Oxford and clinical scores. There were no radiographically loose implants at the time of evaluation. The three types of prosthesis were then compared and a review of those that had undergone revision surgery.