How to Make a Forearm Cast

Forearm casts are applied after wrist fractures and surgical procedures performed on the wrist or forearm. Incorporating plaster or fiberglass, they are usually worn for several weeks. Casts may require changing during that time frame as swelling decreases and the arm becomes smaller. Forearm casts must fit snugly to immobilize the injured area properly; if they are too tight, however, they can compromise blood flow.

Things You'll Need

• Roll of plaster or fiberglass
• Rubber gloves
• Cotton wrap
• Stockinette

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Instructions

• 1

  Position the patient's arm with the elbow bent and supported on a firm surface. Cut the stockinette to length of the patient's forearm, and cut a small slit 2 inches from one end for a thumb hole. Slide the stockinette onto the patient's arm, and wrap cotton around the hand and forearm area.

• 2

  Put on the rubber gloves to prevent the plaster or fiberglass from sticking to your hands. Fill a small bucket with warm water.

• 3

  Unwrap a roll of the casting material, and dip it into the water. Squeeze out the excess liquid.

• 4

  Begin at the hand, and wrap the material around the patient's hand between his thumb and fingers. Continue around the hand and under the thumb. Apply a few layers in this area, smoothing the material as you go to avoid uneven pressure areas.

• 5

  Continue wrapping the material around the forearm overlapping half the width. Continue to smooth the material as you go to avoid wrinkles. Allow the cast to dry thoroughly.