Complications after shoulder replacement include general surgical risks, such as infection, bleeding and nerve injury. The rate of infection is approximately 1 percent, but when it happens, the patient needs more surgery and a prolonged post-op treatment to clear the infection, so we do everything we can to prevent this possibility. Bleeding is unusual, and needing a blood transfusion during or after surgery is unlikely. Nerve injury is also unlikely and, when it happens, usually resolves on its own.
There is a chance the replaced shoulder could dislocate, especially shortly after surgery if the patient falls or isn't using the shoulder sling. And, as noted previously, the implant can wear out over time. Occasionally, some patients have weakness, stiffness or persistent pain. Before deciding to undergo shoulder replacement, it's important to talk to your surgeon about any specific risks you may have based on your general health and shoulder condition.