类风湿关节炎 (ｒｈｅｕｍａｔｏｉｄａｒｔｈｒｉｔｉｓ,ＲＡ)是以关节组织慢性炎症性病变为主要表现的全身性疾病 ,是一种常见的自身免疫性疾病 ,同时亦可累及其他系统。本病侵犯多个关节 ,常以手足小关节起病 ,以双手、腕、肘、膝、踝和足关节受累最为常见 ,呈对称性。主要 Rheumatoid arthritis (RA) is a systemic disease mainly characterized by chronic inflammatory disease of joint tissues. It is a common autoimmune disease and can also affect other systems. The disease invades multiple joints, often small hands and feet joints, hands, wrists, elbows, knees, ankles and foot joints involved the most common, symmetry. main