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Modern joint replacement surgery involves removal of worn cartilage from both sides of the joint, followed by resurfacing of the joint with a metal and plastic replacement implant that looks and functions much like a normal joint. Although nearly every joint in the body can be replaced, most replacement surgeries involve the hip or knee. Joint replacement surgery is typically recommended for patients who have tried non-surgical treatment but still have joint pain. While this is an extremely effective surgical treatment, total joint replacement should be considered as the last (rather than the first) treatment option for patients with advanced arthritis of the hip, knee, or shoulder.