Prothese of shoulder has universal rod with screws osteosynthesis LOCKED

A shoulder prosthesis system for treating humerus fractures of the proximal end must have a prosthetic stem called "universal", to allow both the installation of a prosthetic humeral head prosthesis for an anatomical that the implantation of a cup piece for reverse prosthesis. The universal fastening system reverse Morse taper is incompatible with the screw fixation of transverse passage. The present invention is a male or female coupling part (1) having an elongate protuberance (2) of vertical orientation, designed to be inserted in a recess congruent to the proximal end of the prosthetic stem (8) and having at least one threaded transverse hole (3) for anchoring at least one bone screw tuberosity (12). The smooth hole (11) of the prosthetic stem (8) allows an easy centering of the screw in addition to the outer arm viewfinder.