Joint replacement is a surgical procedure in which a damaged or worn-out joint, often due to arthritis or injury, is replaced with an artificial implant. Commonly performed on the hip, knee, and shoulder, the surgery aims to relieve pain, restore mobility, and improve joint function. After surgery, patients typically undergo physical therapy to regain strength and flexibility in the joint. Joint replacement is often recommended when conservative treatments, like medication or physical therapy, fail to provide adequate relief from pain or disability.