Total hip replacement is a surgical procedure to replace the weight-bearing surfaces of the hip joint. The most common reasons for hip replacement surgery are to relieve pain and replace joint cartilage damaged by osteoarthritis, rheumatoid arthritis and a variety of other conditions that lead to arthritis of the hip. During total hip replacement, the surgeon removes the damaged femoral head (the rounded end of the upper thighbone) and cartilage from the hip socket. The femoral head is replaced with a metal or ceramic ball that is fixed solidly to a metallic stem inserted into the upper part of the femur (thighbone). The socket is usually replaced with a plastic liner fixed into a metal shell. This new, artificial ball-and-socket assembly creates a painless, cushioning effect much like the original cartilage in your hip.
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