ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Double hip replacement. Coloured X-ray of the pelvis of a 63 year old male patient who has had two total hip replacements. Each prosthetic hip joint consists of a shaft and ball (red) attached to the top of the femur (thigh bone) and a socket (brown and orange semi-circle) that is inserted into the pelvis, all made of ceramic. The majority of hip replacements are a result of osteoarthritis, a degenerative joint disease that results in the loss of cartilage between the joint and the growth of bone in place of the cartilage. This causes pain, stiffness and loss of mobility.
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