Jacobs WCH, Anderson PG, Limbeek J, Wymenga AAB 2008
Which type of knee implant is better in Total Knee Replacement surgery for osteoarthritis and rheumatoid arthritis of the knee: mobile or fixed bearing?
To answer this question, scientists analysed 2 studies that tested over 150 people with osteoarthritis of the knee (6 had rheumatoid arthritis). These people had total knee replacement surgery with either a mobile or fixed bearing knee implant and were studied 1 or 7 years after the surgery. These studies provide the best evidence we have today…
…The two studies show that the range of motion/movement of the knee was about the same in people who had a fixed or mobile bearing knee implant. The year long study shows that slightly more people with a mobile bearing knee implant had less pain and better function than with a fixed bearing knee implant. But the seven year long study showed no differences in pain or function between the mobile or fixed bearing knee implants.