
Tim A. answered 05/16/18
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Osteoarthritis is a disease of older people, it results from the wearing away of cartilage in joints over many years. Rheumatoid arthritis is instead an autoimmune disease where the pain comes from inflammation of joints. Some key features of osteoarthritis are that it creates crepitus, osteophytes, and Bouchard and heberden's nodes in the fingers. Some key features of rheumatoid arthritis are warm, red joints, positive rheumatoid factor in the blood, ulnar deviation of the fingers, and swan neck deformity.