Types of Shoulder Replacement
There are four major types of Shoulder Replacements. The decision of choosing the best type for you is left on your surgeon. He will discuss with you to decide which type of Replacement will best meet your needs.
Total Shoulder Replacement:
Total Shoulder Replacement involves replacing the arthritic joint surfaces with a highly polished metal ball and a plastic socket.
Total Shoulder Replacement is divided into two types:
- Cemented versus Uncemented Shoulder Replacements:
The use of cement depends upon the quality of bone. If the bone quality is good then an uncemented prosthesis is press-fitted or else cement is being used.
When only the ball of the shoulder gets replaced, it is called Hemiarthroplasty. In a traditional Hemiarthroplasty, the head of the humerus is replaced with a metal ball and stem. Hemiarthroplasty is recommended when the humeral head is severely fractured but the socket is normal. Other indications for a Hemiarthroplasty include :
- Arthritis that only involves the head of the humerus with a glenoid that has a healthy and intact cartilage surface.
- Shoulders with severely weak bone in the glenoid.
- Some Shoulders with severely torn rotator cuff tendons and arthritis
Surface Replacement of Shoulder:
When the joint surface of the humeral head is replaced with a cup like prosthesis without a stem, it is called a Surface Replacement.
The advantage of this procedure is that it is bone preserving. Resurfacing Hemiarthroplasty may be an option for you if :
- You are young.
- Glenoid surface is good.
- No fracture of humeral head.
Reverse Shoulder Replacement:
In Reverse Total Shoulder Replacement, the socket and metal ball are switched. That means a metal ball is attached to the Shoulder Bone and a plastic socket is attached to the humerus. This allows the patient to use the deltoid muscle instead of the Torn Rotator Cuff to lift the arm.