Perfected total shoulder prosthesis

A total shoulder prosthesis (10) comprising a humeral portion and a scapular portion, each portion being provided with at least one osseointegrable component and at least one articular component. The osseointegrable component in the humeral portion comprises a humeral body (13) with proximal circular ring base (133) facing the scapular portion and an eccentric distal cylindrical base (134). The humeral body has an at least partly trabecular surface and one or more holes (131) for favouring the growth of humeral bone tissue and facilitating the anchorage of the humeral body (13) to the bone. The proximal circular ring base (133) is suitable for being interchangeably coupled with the articular component such as a humeral head (15) for an anatomical prosthesis or a concave insert (22) for a reverse prosthesis. The at least one osseointegrable component in the scapular portion comprises a glenoid base plate (17) with an asymmetric anatomical form for coupling the articular component such as a concave glenoid insert (16) for an anatomical prosthesis or a glenosphere (23) for a reverse prosthesis. The articular components for anatomical prostheses (15,16) or for reverse prostheses (22,23) being intercoupled with each other in an operating condition. The ring base (133) and cylindrical base (134) may be connected to each other by a plurality of arms (132) forming a semispherical as an asymmetrical cage.