Cast Types and Maintenance Instructions

Cast Types and Maintenance Instructions

Picture of a young girl hiding behind her arm, wearing a cast

What is a cast?

A cast holds a broken bone in place as it heals. Casts also help to prevent or decrease muscle contractions, and are effective at providing immobilization, especially after surgery.

Casts immobilize the joint above and the joint below the area that is to be kept straight and without motion. For example, a child with a forearm fracture will have a long arm cast to immobilize the wrist and elbow joints.

What are casts made of?

The outside, or hard part of the cast, is made from two different kinds of casting materials.

Cotton and other synthetic materials are used to line the inside of the cast to make it soft and to provide padding around bony areas, such as the wrist or elbow.

Special waterproof cast liners may be used under a fiberglass cast, allowing the child to get the cast wet. Consult your child's doctor for special cast care instructions for this type of cast.

What are the different types of casts?

Below is a description of the various types of casts, the location of the body they are applied, and their general function.

Type of CastLocationUses
Short arm cast: Applied below the elbow to the hand. Forearm or wrist fractures. Also used to hold the forearm or wrist muscles and tendons in place after surgery.
Long arm cast: Applied from the upper arm to the hand. Upper arm, elbow, or forearm fractures. Also used to hold the arm or elbow muscles and tendons in place after surgery.
Arm cylinder cast: Applied from the upper arm to the wrist. To hold the elbow muscles and tendons in place after a dislocation or surgery.
Illustrations of arm casts, 3 types
Click Image to Enlarge

 

Type of CastLocationUses
Shoulder spica cast: Applied around the trunk of the body to the shoulder, arm, and hand. Shoulder dislocations or after surgery on the shoulder area.
Minerva cast: Applied around the neck and trunk of the body. After surgery on the neck or upper back area.
Short leg cast: Applied to the area below the knee to the foot. Lower leg fractures, severe ankle sprains/strains, or fractures. Also used to hold the leg or foot muscles and tendons in place after surgery to allow healing.
Leg cylinder cast: Applied from the upper thigh to the ankle. Knee, or lower leg fractures, knee dislocations, or after surgery on the leg or knee area.
Illustrations of leg casts, 3 types
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Type of CastLocationUses
Unilateral hip spica cast: Applied from the chest to the foot on one leg. Thigh fractures. Also used to hold the hip or thigh muscles and tendons in place after surgery to allow healing.
One and one-half hip spica cast: Applied from the chest to the foot on one leg to the knee of the other leg. A bar is placed between both legs to keep the hips and legs immobilized. Thigh fracture. Also used to hold the hip or thigh muscles and tendons in place after surgery to allow healing.
Bilateral long leg hip spica cast: Applied from the chest to the feet. A bar is placed between both legs to keep the hips and legs immobilized. Pelvis, hip, or thigh fractures. Also used to hold the hip or thigh muscles and tendons in place after surgery to allow healing.
Illustrations of hip spica casts, 3 types
Click Image to Enlarge

 

Type of CastLocationUses
Short leg hip spica cast: Applied from the chest to the thighs or knees. To hold the hip muscles and tendons in place after surgery to allow healing.
Illustration of child wearing a short leg hip spica cast
Click Image to Enlarge

 

Type of CastLocationUses
Abduction boot cast: Applied from the upper thighs to the feet. A bar is placed between both legs to keep the hips and legs immobilized. To hold the hip muscles and tendons in place after surgery to allow healing.
Illustration of child wearing abduction boots
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How can my child move around while in a cast?

Assistive devices for children with casts include:

Cast care instructions:

Older children with body casts may need to use a bedpan or urinal in order to go to the bathroom. Tips to keep body casts clean and dry and prevent skin irritation around the genital area include the following:

When to call your child's doctor

Contact your child's doctor or health care provider if your child develops one or more of the following symptoms:

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