ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Osteoarthritis of the hip. X-ray the left hip of a 74 year old patient showing osteoarthritis. The ball at the top of the femur (thigh bone) fits into the socket of the hip. In a healthy individual there is usually a clear space between the ball and socket, but these joints show little or no space. Osteoarthritis results in the loss of cartilage between the joint. The healing process leads to the growth of bone in place of the cartilage, causing pain, stiffness and loss of mobility. Treatment is with the surgical replacement of the joint.
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