Joint pain that is severe and disabling may indicate the need for surgery to replace the old worn out joint. It is often caused by osteoarthritis. Total joint replacements can help patients regain mobility, strength and daily activities but is often used as a last resort when pain medications, weight loss, and exercise is not enough. PT can help patients with total joint replacements rehabilitate and regain mobility, strength and function. Common joint replacements are knee and hip, less common are shoulder, ankles, wrist and elbows.