The Tornier shoulder prostheses are non-constrained prostheses intended for the total or partial replacement of the glenohumeral articulation. The AequalisTM PerFORM glenoids range is made up of three models: pegged glenoid, CortiLocTM pegged glenoid, keeled glenoid. The AequalisTM PerFORM glenoids range is intended to replace the glenoid part of the scapulohumeral joint as part of a total anatomical shoulder prosthesis. Prosthetic replacement with this device (AequalisTM PerFORM glenoid component + humeral component) may be indicated to relieve severe pain or significant disability caused by: Degenerative pathologies: osteoarthritis, rheumatoid polyarthritis, post-traumatic arthritis. Primary and secondary necrosis of the humeral head Displaced 4-part upper humeral fracture Humeral head fracture Other pathologies where arthrodesis or resectional arthroplasty of the humeral head are not acceptable Revisions when other treatments or devices have failed. The AequalisTM PerFORM glenoids are intended for cemented use only.