Knee replacement is a surgical procedure that involves removing damaged parts of the knee joint and replacing them with artificial components. This surgery is often recommended for individuals suffering from severe knee pain or disability due to conditions like osteoarthritis or rheumatoid arthritis. The goal is to relieve pain and improve mobility. The procedure can be performed as a total knee replacement, where the entire joint is replaced, or a partial knee replacement, which only addresses one side of the joint. Recovery typically involves physical therapy to help restore strength and function to the knee, allowing patients to return to their daily activities.