Humerus Fracture, Treated with Immobilization

ExitCare ImageThe humerus is the large bone in the upper arm. A broken (fractured) humerus is often treated by wearing a cast, splint, or sling (immobilization). This holds the broken pieces in place so they can heal.


  • Put ice on the injured area.

  • Put ice in a plastic bag.

  • Place a towel between your skin and the bag.

  • Leave the ice on for 15-20 minutes, 03-04 times a day.

  • If you are given a cast:

  • Do not scratch the skin under the cast.

  • Check the skin around the cast every day. You may put lotion on any red or sore areas.

  • Keep the cast dry and clean.

  • If you are given a splint:

  • Wear the splint as told.

  • Keep the splint clean and dry.

  • Loosen the elastic around the splint if your fingers become numb, cold, tingle, or turn blue.

  • If you are given a sling:

  • Wear the sling as told.

  • Do not put pressure on any part of the cast or splint until it is fully hardened.

  • The cast or splint must be protected with a plastic bag during bathing. Do not lower the cast or splint into water.

  • Only take medicine as told by your doctor.

  • Do exercises as told by your doctor.

  • Follow up as told by your doctor.


  • Your skin or fingernails turn blue or gray.

  • Your arm feels cold or numb.

  • You have very bad pain in the injured arm.

  • You are having problems with the medicines you were given.


  • Understand these instructions.

  • Will watch your condition.

  • Will get help right away if you are not doing well or get worse.