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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

    Knee Arthritis: Questions to Ask Your Doctor

    Should I wrap or brace my knee? What pain reliever can I take when it hurts? Should I use heat or ice on my knee? Could the pain be a sign that my arthritis is getting worse? Are there any activities I shouldn't do? Do supplements like glucosamine help?

    Read the Knee Arthritis: Questions to Ask Your Doctor 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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