Replacement arthroplasty, or joint replacement surgery, is a procedure of orthopedic surgery in which an arthritic or dysfunctional joint surface is replaced with an orthopedic prosthesis. Joint replacement is considered as a treatment when severe joint pain or dysfunction is not alleviated by less-invasive therapies Joint replacement arthroplasty or joint replacement surgery ,is a procedure of orthopedic surgery in which an arthritic or dysfunctional joints is replaced.