The goals of shoulder arthroplasties are: 1) to decrease the pain associated with degenerative diseases of the glenohumeral joint and 2) to increase the shoulder mobility. Isolated humeral hemiprostheses are indicated for pathology limited to the humeral head (fractures, avascular osteonecrosis of the humeral head). Anatomical total shoulder prostheses are proposed in cases of diseases involving both parts of the glenohumeral joint (osteoarthritis, inflammatory arthritis). Reversed total shoulder prostheses (constraint) are reserved for glenohumeral arthropathies associated with extensive lesions of the rotator cuff. The main complications include the glenoid loosening (total prostheses) and the secondary glenoid wear (hemiprostheses).