How rheumatoid arthritis affects your joints


You see the joint capsule has a lining of tissue called the synovium. The synovium makes fluid that keeps joints lubricated. When you have rheumatoid arthritis, your immune system sends antibodies to the synovium and causes inflammation. This causes pain and joint damage, especially in small joints in the fingers and wrists. But it can affect any joint.

April 07, 2015