Shoulder prosthesis assembly

A shoulder prosthesis assembly, comprising:

• a metaglenoid plate having a bushing projecting therefrom and a bore extending from the metaglenoid plate into the bushing, the bore having a tapping over at least a portion of its length;
• and
• a glenoid sphere having a recess, the recess configured to receive at least a portion of the metaglenoid plate, and a screw comprising a shank configured to be received within the bore,
• wherein the shank is threaded over a portion of its length and has an elongate smooth free end, said smooth free end extending between said threaded portion and a tip, said tip having a diameter different than said smooth free end, and
• wherein an outside diameter of the smooth free end is substantially the same as an inside diameter of the bore.

A method of implanting a shoulder prosthesis assembly, comprising the steps of:

• providing a metaglenoid plate having a tubular bushing projecting therefrom and a bore extending from the metaglenoid plate into the tubular bushing, the bore having a tapping over at least a portion of its length, and a glenoid sphere having a recess configured to receive the metaglenoid plate, and a screw comprising a shank configured to be received within the bore, and wherein the shank is threaded over a portion of its length and has an elongate smooth free end, an outside diameter of the smooth free end is substantially the same as an inside diameter of the bore;
• inserting the smooth free end of the screw into the bore of the plate;
• engaging the thread of the screw with the tapping of the bore;
• and
• rotating the screw relative to the plate until the plate is more fully disposed within the recess of the glenoid sphere than prior to the engaging step.