The Hybrid Humerus Reverse Shoulder Arthroplasty: A prospective study of bone grafting and metaphyseal fixation with undersized stem in the assessment of proximal humeral stress shielding

Background

A significant proportion of revisions after reverse shoulder arthroplasty (RSA) is attributed to the humeral component. The purpose of this study is to evaluate the radiographic and clinical outcomes of the hybrid humerus technique for RSA using a Grammont-style humeral prosthesis in an onlay fashion with metaphyseal bone impaction grafting technique and undersized stem to avoid humeral stress shielding, notching, and loosening.