Hemi shoulder replacement, also known as partial shoulder replacement, is a surgical procedure to replace only one half of the shoulder joint. It involves replacing the damaged or arthritic humeral head (the ball portion of the shoulder joint) with a prosthetic implant, while preserving the natural socket (glenoid).
Hemi shoulder replacement is typically indicated for patients with severe arthritis affecting only the humeral head. It may also be considered for patients with a complex proximal humeral fracture that cannot be adequately treated with other methods.
The procedure involves removing the damaged humeral head and replacing it with a prosthetic implant. The glenoid (socket) is not replaced, which differentiates hemi shoulder replacement from total shoulder replacement. The implant is usually secured with cement, although press-fit implants are also available.Rehabilitation after surgery focuses on early motion and strengthening exercises to optimize outcomes.
Hemi shoulder replacement can provide pain relief and improve function in appropriately selected patients. Patients often experience improved range of motion and shoulder strength.
Complications of hemi shoulder replacement can include infection, nerve injury, instability, and component loosening. Proper patient selection, surgical technique, and postoperative care can help minimize these risks.