Dr. Shetty's Center of Orthopaedics
Partial shoulder arthroplasty, also called shoulder hemiarthroplasty or partial shoulder replacement, is a surgical procedure where the upper bone in the arm (humerus) is replaced with a prosthetic metal implant, whereas the other half of the shoulder joint (glenoid or socket) is left intact.
This procedure involves replacing the upper part of the arm bone(humerus) with a metal ball and a stem (which is press fit inside the canal of the humerus)) and the socket (glenoid) is resurfaced with a high-quality, ultra-high-molecular-weight polyethene.
Reverse shoulder arthroplasty is the procedure wherein the orientation of the ball and socket joint is reversed, which is most helpful to patients who have an irreparable rotator cuff with significantly affected function.