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Rheumatoid arthritis usually affects joints on both sides of the body in the hands and feet, as well as the hips, knees, and elbows. Without proper treatment, rheumatoid arthritis can become a chronic, disabling condition. Aching joints are common in arthritis. In rheumatoid arthritis, the joint lining swells, invades surrounding tissues, and produces chemical substances that attack and destroy the joint surface. People of all ages may be affected. The disease usually begins in middle age. With osteoarthritis, the articular cartilage that covers the ends of bones in the joints gradually wears away. Where there was once smooth articular cartilage that made the bones move easily against each other when the joint bent and straightened, there is now a frayed, rough surface. Joint motion along this exposed surface is painful. Osteoarthritis usually develops after many years of use. It affects people who are middle-aged or older. Other risk factors for osteoarthritis include obesity, previous injury to the affected joint, and family history of osteoarthritis.
Thank you for your question! William Harvey, MD, Rheumatology
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