Hip replacement A hip replacement (total hip arthroplasty) is a common surgery to relieve pain and improve function when there is significant joint wear—often due to osteoarthritis/arthrosis . Surgery is only the first step: physical therapy after a hip replacement is key to walking confidently again, rebuilding strength and mobility, and reducing the risk of falls—with progression tailored to your situation and to your surgeon’s guidelines. After a total hip replacement, ph