Over 5-Year Follow-up of Total Knee Replacement with the Okayama University Type (Mark II )

We have operated on patients complaining of severe knee joint dysfunction (52 joints) from osteo-arthritic changes using Okayama University type (Mark II) or over 5 years. And Post-operative knee function is evaluated clinically and roentgenologically in 12 patients (13 joints). Results are as follows: femoro-tibial angle (170°-177°), medial tibial angle (85°-90°), posterior tibial angle (82°-90°), and clinical evalution is good.In spite of clinically good function, sinking of the tibial component is shown roentgenologically in only one patient (1 joint).