Some studies show age isn't a key factor in the results of shoulder replacement surgery. The condition of the bone and muscles is much more important. A smooth socket may mean only half the joint must be replaced. The chances of a good result are better with this operation called a hemiarthroplasty.

The type of shoulder problem is another important link to the outcome of the operation. Patients with rheumatoid arthritis or bone loss don't do as well after surgery. It's not likely that being a man versus a woman makes much difference either.

Ask your doctor if you are a good candidate for this operation. X-rays, MRIs, and a good clinical exam can help give you and your doctor the information you need to make this important decision.