Shoulder replacement is done in various ways; the traditional Hemiarthroplasty (Neer's prosthesis) , total shoulder replacement and the newer surface replacement. In the traditional shoulder replacement, the diseased ball and the surface of the socket are removed and replaced with artificial components. These can be fixed either with a type of glue known as bone cement or without any such material and bone is allowed to incorporate in the specially made components. In surface replacement which is meant for younger patients, very minimal bone is removed from the shoulder bone (Humerus).