Arthroplasty is a surgical procedure to restore the function of a joint. A joint can be restored by resurfacing the bones. An artificial joint (called a prosthesis) may also be used.

Various types of arthritis may affect the joints. Osteoarthritis, or degenerative joint disease, is a loss of the cartilage or cushion in a joint, and is the most common reason for arthroplasty.

Arthroplasty may be used when medical treatments no longer effectively relieve joint pain and disability.