[Replacement arthroplasty for patients with rheumatoid arthritis].

Replacement arthroplasty is an excellent method to improve activities of daily living (ADL) and quality of life (QOL) in patients with rheumatoid arthritis (RA) . In many cases of RA, prosthetic surgery is carried out on multiple joints. When prosthetic surgery is performed in cases with severe knee contracture or joint destruction, surgical invasion can be extensive. Regarding timing of surgery, it is better while the joint is still somewhat intact, and as long as the operability conditions can be met, age is irrelevant. It is important not to delay the timing of surgery. This article mainly considers total knee arthroplasty (TKA).