Partial Shoulder Replacement
Partial shoulder replacement, also called shoulder hemiarthroplasty is a surgical procedure during which 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.
What are the indications for shoulder hemiarthroplasty?
Avascular necrosis of humeral head, Is a condition in which the blood supply to the humeral head (ball) is blocked due to some reasons like excessive alcoholism, corticosteroid use, radiation therapy and sickle cell anaemia. As a result, the cells of the head of the humerus will start dying.
Tumour: involving the head of the humerus will be required to remove surgically and replace with a metal prosthesis.
Trauma: Fracture involving the upper part of the humeral bone, particularly “Neer type iv” fracture in which humeral head will be broken into 4 parts.
Osteoarthritis: Arthritis of the shoulder joint with inadequate glenoid (socket) bone stock.
Goals of shoulder hemiarthroplasty
Goals of hemiarthroplasty include :
relief of pain
improvement in overhead motion, and
improvement in strength with overhead activities.