Resurfacing of the shoulder involves replacing the worn out top part of the humerus with a metal cap. This allows for more motion and less pain from arthritis. It can be done alone (hemiarthroplasty), or in conjunction with a replacement of the socket (total shoulder replacement.
Resurfacing preserves more of the humerus bone. It is generally indicated for younger patients who will likely outlive their implant and require revision surgery in the future.