Knee arthritis osteoarthritis

Knee arthritis osteoarthritis information about osteoarthritis, a common form of arthritis that affects adults. Centers for Disease Control and Prevention. Note: Javascript is disabled or is not supported by your browser.

For this reason, some items on this page will be unavailable. What are the signs and symptoms of OA? How many people get OA? What are the risk factors for OA? What are the complications of OA? How can someone with OA improve their quality of life? It most frequently occurs in the hands, hips, and knees.

With OA, the cartilage and bones within a joint begin to break down. These changes usually develop slowly and get worse over time. OA can cause pain, stiffness, and swelling, and can result in disability. OA affects over 30 million US adults. OA is caused by damage or breakdown of joint cartilage between bones.