Glenoid anchor for a shoulder joint prosthesis

A glenoid anchor for a shoulder joint prosthesis, of the type intended to be fixed to a glenoid cavity of a shoulder blade,

• wherein the glenoid anchor consists only of a structurally independent pin, with an internally hollow conical sleeve, which has a tapered distal end configured for being directly fixed to the glenoid cavity and an open proximal end configured for being removably attached to a prosthesis component,
• wherein said prosthesis component is a lug of either one of an anatomical prosthesis or a reverse prosthesis,
• wherein said glenoid anchor is configured for removal of said lug in order to convert the anatomical prosthesis to the reverse prosthesis or vice-versa, while keeping the structurally independent pin inside the glenoid cavity,
• wherein an outer surface of the sleeve of said pin has a trabecular structure for favouring osteogenesis and bone integration;
• wherein said pin further comprises:
• an annular recess formed inside an internal cavity of the pin, for receiving by means of snap-engagement an edge of the lug of the prosthesis component;
• at least one pair of oppositely arranged anti-rotation notches at said annular recess for receiving oppositely arranged teeth of the lug.