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    Osteoarthritis - Cause

    Osteoarthritis occurs when changes in cartilage cause the cartilage to break down faster than the body can produce it. When cartilage breaks down, the bones rub together and cause damage and pain. Experts don't know why this happens. But things like aging, joint injury, being overweight, and genetics may increase your risk.

    In some cases, arthritis is caused by other conditions that damage cartilage.

    Recommended Related to Osteoarthritis

    Diagnosing Arthritis

    In addition to symptoms and a doctor's exam, blood tests and X-rays are commonly used to confirm rheumatoid arthritis. The majority of people with rheumatoid arthritis have an antibody called rheumatoid factor (RF) in their blood, although RF may also be present in other disorders. A new test for rheumatoid arthritis that measures levels of antibodies in the blood (called the anti-CCP test) is more specific and tends to be only elevated in patients with rheumatoid arthritis or in patients about to...

    Read the Diagnosing Arthritis article > >

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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