Systems and methods of retention for glenosphere

Abstract

A retention system (140) for coupling a glenosphere (130) to a baseplate (122) in a reverse shoulder arthroplasty including a glenosphere having a retention recess (135) formed in a base of the glenosphere and a retention fastener (141) configured to engage a threaded hole (123) of the baseplate, the retention fastener including a fastener head (142), where the fastener head is configured to be retained within the retention recess. A retention cap (143) can be configured to be coupled within the retention recess of the glenosphere, the retention cap including a body portion (144) having an opening (145) therethrough. The head of the retention fastener can then be configured to be retained within the opening of the body portion to retain the fastener head within the retention recess. Alternatively, the glenosphere can itself include a step (139) that protrudes radially inward from a wall of the retention recess to prevent the retention fastener from passing through the retention recess.

Dependencies are inferred from the claim text.