Modular humeral prosthesis for an inverted shoulder prosthesis

A modular humeral prosthesis comprising:

• an anatomical stem having a longitudinal axis and including a hole;
• a separable epiphyseal head which may be oriented angularly by rotation about the longitudinal axis of the anatomical stem and includes an axial hole;
• a first contact surface on the epiphyseal head and a second contact surface on the anatomical stem, the first and second contact surfaces being in contact with each other;
• the second contact surface being planar, perpendicular to the longitudinal axis and constituting a proximal extremity of the anatomical stem;
• a screw which may pass through the axial hole provided in the epiphyseal head and into the hole in the anatomical stem to connect the epiphyseal head to the anatomical stem;
• indicia of rotation between the epiphyseal head and the anatomical stem;
• wherein the first contact surface extends laterally beyond the second contact surface of the anatomical stem whatever the angular orientation of the epiphyseal head with respect to the anatomical stem;
• and
• wherein the epiphyseal head comprises a socket for receiving a cup of a reverse shoulder prosthesis cooperating with a scapular prosthesis.