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Shoulder replacement is removing the damaged portion of the humeral head (ball) and the glenoid (cavity) and replacing it with a new ball and socket made of either metal or plastic.
If only the ball i.e., the humeral head is replaced with a metal prosthesis then it is called hemiarthroplasty. If only the surface of the ball is replaced with a sheet of prosthesis then it is called resurfacing. If both the ball and socket are replaced by new metal or plastic ball and socket then it is called total shoulder arthroplasty.
However, if the ball is replaced by a socket and the socket is replaced by a ball then it is called reverse shoulder arthroplasty.
You may require shoulder replacement for shoulder arthritis in the following
Hemiarthroplasty is a type of shoulder replacement when only the head is
replaced. It is usually done in elderly patients who present with a severe fracture of the humeral head which cannot be fixed using plate and screws
Total shoulder arthroplasty is a successful surgery with good outcomes in
properly selected patients. Patients are able to return back and perform all their activities of daily living after the surgery without difficulty
The complications of total shoulder arthroplasty are just like any other joint
replacement surgery. Patients can develop complications such as infection,
dislocation of the shoulder, fracture of the humerus if the bone is weak, and rarely nerve injury. The other complication is aseptic loosening and polyethylene wear due to excessive wear and tear