Reverse Total Shoulder Replacement
What is a reverse total shoulder replacement?
A reverse total shoulder replacement is a special type of shoulder surgery. It surgeon a doctor to remove the damaged parts of the shoulder and replace them with artificial parts.
The shoulder joint is made up of the upper arm bone (humerus) and the shoulder blade (scapula). The rounded end of the upper arm bone moves inside a shallow socket in the shoulder blade. Because of this, your shoulder normally has a very wide range of motion. Cartilage, tendon, and ligaments around the joint also provide support and help the joint move smoothly.
In a reverse total shoulder replacement, a surgeon removes the rounded head of the upper arm bone. Using screws and special tools, he or she attaches a plastic socket to the remaining bone. The surgeon also removes part of the socket of the shoulder blade. This is then replaced with a metal ball. The metal ball can then move around inside the socket that attaches to the upper arm bone.
This is different from a standard total shoulder replacement. In a standard surgery, the metal ball attaches to the upper part of the humerus. The new socket attaches to the shoulder blade. This more closely follows a person’s real anatomy.
Healthcare providers advise reverse total shoulder replacements for certain types of shoulder injuries. The most common type is arthritis with a large rotator cuff tear.
Why might I need a reverse total shoulder replacement?
Surgery may be an option for you if you have severe pain that gets in the way of everyday activities. Surgery may also be advised if you have weakness in your shoulder and are not able to move it fully. It may also be advised if your symptoms don’t get better with other treatments. These may include medicines, shots (injections), and physical therapy.
Most people get a standard total shoulder replacement. However, reverse total shoulder replacement works better for people with certain injuries, including some rotator cuff injuries. If you have this type of injury, a standard shoulder replacement still might leave you with some pain and limited movement. A reverse total shoulder replacement usually improves these problems. After surgery, instead of using the rotator cuff to lift up your arm, you can use your deltoid muscle. This is a muscle that helps lift the arm up and away from the body.
Healthcare providers also may advise the surgery to people who have already had a standard shoulder replacement for osteoarthritis or other reasons. These people may still have symptoms that a reverse total shoulder replacement can fix.
How do I get ready for a reverse total shoulder replacement?
Talk with your provider about how to prepare for your surgery.
- Tell your provider about all the medicines you take. This includes over-the-counter medicines such as aspirin and all prescription medicines. It also includes herbs, vitamins, and other supplements.
- Ask if you need to stop taking some medicines before the surgery, such as blood thinners.
- Don’t eat or drink after midnight the night before your surgery.
- Follow any other instructions from your healthcare provider.
Before your surgery, you may need imaging tests. These will give your provider more information about your shoulder. These might include:
- CT scan to see the bones in more detail
- MRI to see the soft tissue around the bones in more detail
What happens during a reverse total shoulder replacement?
Your healthcare provider can explain the details of your surgery. An orthopedic surgeon will do the surgery aided by a team of specialized healthcare providers. The procedure will take several hours. In general you can expect the following:
- You will likely have general anesthesia. This will make you sleep through the surgery.
- You might also get an injection that blocks the nerves in your shoulder and arm. Some people have this instead of general anesthesia.
- A healthcare provider will carefully check your vital signs during the procedure.
- Your surgeon will make a cut through the skin near the top of your shoulder. He or she will also need to cut through the layer of muscle beneath.
- Your surgeon will remove the damaged section of the humerus and the scapula. Using special screws, he or she will attach the metal ball to your scapula and the plastic socket to the top of the upper arm bone.
- Your surgeon may place a tube to drain extra fluid in the joint. This tube will be taken out later.
- After the new joint is in place, your surgeon will close the muscles and skin with stitches or staples.