Numerous: RA affects the joint lining or inner joint capsule. RA is an autoimmune disease that commonly had a hereditary component. The synovial proliferation that occurs causes damage to the cartilage. Typically symmetrical affects right and left and multiple joints affected. OA is a wear and tear of the cartilage in a joint. The cartilage thins and more stress seen on bone causing pain
Answered 3/12/2015
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