Caring for your plaster cast

Looking after your plaster cast means you’ll recover much faster. Here’s our advice on how to keep your plaster in good condition.
Plaster casts are made up of a bandage and a hard covering (usually plaster of Paris). They allow broken bones in the arm or leg to heal by holding them in place, and usually need to stay on for between four and 12 weeks.

Basic plaster cast care

  • Keep your arm or leg raised on a soft surface, such as a pillow, for as long as possible in the first few days. This will help any swelling to go down and help the cast dry correctly.
  • Don’t get your plaster cast wet. This will weaken it, and your bone will no longer be properly supported.
  • You can use a plastic bag to cover up the cast when you have a bath or shower. Try using sticky tape or a rubber band to seal the bag at the top and bottom to make it as watertight as possible.

Taking good care of your cast will help ensure a better recovery. Find out more about caring for your cast in the videos and patient information leaflet below.