CDC – Arthritis – Basics – Definition – Osteoarthritis

Posted: August 14, 2015 at 2:41 pm

Osteoarthritis (OA) is a disease of the entire joint involving the cartilage, joint lining, ligaments, and underlying bone. The breakdown of these tissues eventually leads to pain and joint stiffness. The joints most commonly affected are the knees, hips, and those in the hands and spine. The specific causes of OA are unknown, but are believed to be a result of both mechanical and molecular events in the affected joint. Disease onset is gradual and usually begins after the age of 40. There is currently no cure for OA. Treatment for OA focuses on relieving symptoms and improving function, and can include a combination of patient education, physical therapy, weight control, use of medications, and eventually total joint replacement.

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CDC - Arthritis - Basics - Definition - Osteoarthritis

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