Components for a modular shoulder and hip prosthesis

A prosthetic device for implanting in a ball and socket joint cavity of a patient comprising:

• an enlongate stem having a longitudinal axis, a distal end and an opposite head end, said head end terminating in a generally flat surface with an elongate mounting lock bore formed therein, said mounting lock bore extending generally perpendicular to said flat surface of said stem;
• an articulating head member having a generally curved articulating surface and an opposite generally flat planar surface, said head member including a generally elongate mounting lock member extending perpendicular from said planar surface and offsert from a central axis of said articulating head member, said device further including a plurality of bores extending generally perpendicular into said planar surface about said elongate mounting lock member and at least one bore extending generally perpendicular into said flat surface;
• and
• a pin element configured to be insertable into axially aligned said at least one bore and one of said plurality of said bores which allows customized orientation of the head member with respect to the stem to meet the anatomical requirement of the patient.