You may have an elbow arthritis surgery like an elbow arthroscopy or an elbow joint replacement.
You may have hurt your elbow playing sports and need an autograph repair of a UCL tear, tennis elbow surgery, or Tommy John surgery.
You may have ruptured your biceps tendon and need it fixed.
You may have broken your elbow and need surgery to repair it so it can heal.
After your surgery you may have to wear a splint or a sling, and may have restrictions on what you can do with your arm while it heals. You will probably have physical therapy so you can regain full use of your arm.