Patent ID: 8858640

Claim:
A shoulder prosthesis system adapted to be secured in a bony vault of an anatomy, the system comprising: an attachment device including: a body adapted to extend into a bony vault, the body defining a central longitudinal axis and having a first end and a second end opposite to the first end that is adapted to be positioned adjacent a closed end of the bony vault; a plurality of contact arms secured to the body and projecting outwardly from the central longitudinal axis of the body to define contact surfaces for engaging an internal face of a peripheral wall of the bony vault, each of the plurality of contact arms being spaced from an adjacent contact arm, and each of the plurality of contact arms extending along a curved longitudinal axis between a first end connected to the body and a second free end separated from the body, the free end forming a flat surface; and a joint component having a first side secured to the body of the attachment device and a second side defining a joint face.