Knee replacement is a surgical procedure in which an artificial knee joint, made of metal and plastic components, is implanted to replace a damaged or diseased natural knee joint. This operation is typically performed to alleviate pain and improve the mobility of individuals who suffer from severe arthritis or other conditions that have significantly reduced their ability to move around freely. The goal of knee replacement surgery is to provide patients with relief from their symptoms, as well as a greater range of motion and improved quality of life.