Abstract
Postoperative results more than five years of cemented total knee replacement were reviewed clinically and radiologically and compared between 31 knees 21 patients with rheumatoid arthritis (RA) and 30 knees 21 patients with Osteoarthritis (OA). Average follow-up periods were 97.3 months in RA, and 86.6 months in OA. Kinematic total condylar type in 49 knees and Total condylar type in 8 knees were mainly used prostheses. Scores of other items except range of motion according to JOA score system increased significantly after surgery. Total arc at the time of follow-up was well correlated with preoperative one. Survival rates were calculated by defining loosening, late infection and revision surgery as end point of TKR.
Cumulative survival rates at ten years were 91.2% in RA and 100% in OA. Radiolucent zones, which mainly appeared at tibial bone-cement interface, were observed in 16.1% of RA knees and 16.7% of OA knees.
The overall results of cemented TKR suggested to be stable and durable for more than 10 years in both RA and OA knees.
