Psychological therapies for improving outcomes after total hip or knee replacement in people with osteoarthritis and rheumatoid arthritis

This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: To assess the effectiveness of psychological therapies on post‐surgical outcomes following knee or hip joint replacement surgery in people with osteoarthritis. Secondary questions are whether some psychological therapies confer more benefits than others, and whether effectiveness differs with type of arthritis and site of surgery.