Metal-on-Metal Total Hip Replacement

What is Osteoarthritis?
The joints of our bodies are cushioned by cartilage. As we age, normal wear and tear (degeneration) of the cartilage takes place in most joints. With osteoarthritis, the cartilage cushioning the bone surfaces wears away, causing the bones to rub against each other in a painful way.

What is Rheumatoid Arthritis?
Another form of arthritis, known as rheumatoid arthritis, occurs when the body's own immune system attacks the synovial lining of the joints, just as it would a foreign bacteria. Synovial fluid is a clear, smooth, oil-like lubricating liquid that makes it easier for the joints to move.

What is Osteonecrosis?
Osteonecrosis or avascular necrosis occurs when an area of bone loses its blood supply, causing that bone to die and subsequently break down. Osteonecrosis of the hip joint accounts for over 90% of all osteonecrosis cases. This disease is primarily seen in people ages 20 to 40, predominantly in men.

What is Traumatic Arthritis?
Traumatic arthritis results when the joint, or ligaments surrounding it, are damaged by fracture, dislocation, or accident-related injury. All arthritic conditions result in stiffness, swelling and the loss of motion. It becomes difficult to put pressure on the hip and the joint becomes increasingly tender and swollen. As time passes, arthritis of the hip can significantly affect your ability to walk.

What is Non-Arthritic Trauma?
In addition to arthritis, hip replacement surgery may be recommended for individuals whose hip has been injured as the result of trauma. This could be a hip fracture or dislocation caused by a fall or other injury to the hip.

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12/20/2006

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