A shoulder surgery is performed to repair a damaged, degenerated or diseased shoulder joint. It is the treatment for a variety of shoulder-related conditions like rotator cuff tears, shoulder dislocations. The goal of a shoulder surgery is to restore the function of the shoulder joint and provide relief from pain. In the shoulder replacement surgery, the damaged shoulder parts are replaced by artificial parts called prosthesis. There are two options of replacement namely replacement of head of the humerus bone (only ball) and replacement of ball and the socket (glenoid).