About pressure ulcers and cast sores

A pressure ulcer is an area of skin that has become damaged, due to pressure or rubbing. This pressure or rubbing can sometimes be caused by a cast.

Pressure on the skin reduces the blood flow to the area and the skin can begin to break down.  This can happen even if pressure is only applied to the area for a short period of time. 

The longer the pressure is applied, the more likely it is to develop from a red area of skin into a blister or open sore.

Examples
  • If someone wears a leg cast, the hard cast can put pressure on their heel.
  • If someone wears an arm cast, their elbow skin can rub against the cast.

Pressure sores

Fitting the cast to reduce the risk of pressure sores

We will make sure your cast fits correctly.  It needs to feel snug and provide good support to the injured limb.

  • We will identify and assess particular areas of risk.  These include the elbows, wrists, ankles and heels.
  • We will pad your cast to prevent sores developing.
  • We may ask you to come to the hospital for a skin check before your follow up appointment.  If you already have a sore, we may need to manage it more closely.

Reducing the risk of pressure sores when you wear a cast

If you wear an arm cast, keep your hand above the level of your heart.  We may give you a sling to help you do this.

Arm in cast

If you wear a leg cast, you can remove pressure by putting your leg on pillows, avoiding contact with the heel and generally supporting your leg. 

It is a good idea to reposition your leg often, so that you avoid putting pressure on a particular area for too long.

Foot in cast raised

Important

Get in touch with the Plaster Room department (see Contacts section below) if you notice any of the following:

  • discharge or smell from underneath the cast
  • burning feelings, soreness or blister like pain
  • stabbing pain under the cast
  • visible breakdown of the skin surrounding the edges of the cast
  • any discomfort caused by the cast.

Go to your nearest Emergency Department (A&E) if you notice these signs and are unable to contact the Plaster Room department.

Contact information

Kingston Hospital Plaster Room Department Monday to Thursday 8.30am to 5pm

or

If the Plaster Room is closed, go to the Emergency Department (A&E)

Telephone:

Kingston Hospital Plaster Room: 020 8934 2166