炎关
炎关-
类风湿关节炎关（RA）是一种以关节滑膜炎症为特征的慢性全身性自身免疫性疾病，滑膜炎可反复发作，导致关节软骨及骨质破坏，最终引起关节畸形及功能障碍。
Rheumatoid arthritis ( RA ) is a chronic systemic disease characterized by articular synovitis of autoimmune disease , synovitis can be repeated attack , led to the destruction of articular cartilage and bone , and ultimately cause joint deformity and dysfunction .