This procedure may be carried out to relieve a patient of severe pain the shoulder joint.   The joint, made up of a ball and socket (glenoid) and there is cartilage between the joint for smooth functioning. When there is wear and tear of the joint, the patient experiences pain.   Using arthroscopic surgery, an orthopaedic surgeon will make small incisions in the shoulder area and replace the ball and socket with artificial components, which will help in smooth movement and relieve pain.