Keeping Your Cast Dry

Some casts are fully waterproof. These casts have a waterproof lining and can be submerged in water. After getting wet, they usually dry within approximately 1½ hours.

However, most casts are not waterproof and must be kept dry at all times. A wet cast can become damaged, irritate the skin, and, following surgery, increase the risk of wound infection.

Commercially available cast protectors are available from most major pharmacies and can help keep your cast dry while showering.

Always ask your orthopaedic surgeon or healthcare provider whether your cast is waterproof and what precautions you should take.

Elevation

Swelling is common after an injury or surgery and can increase pain and discomfort.

To help reduce swelling:

• Keep the injured limb elevated whenever possible.
• For an arm injury, use a sling or support the arm on pillows.
• For a leg injury, elevate the limb on pillows so that it is above the level of your heart when resting.
• Avoid allowing the injured limb to hang down for prolonged periods.

Monitoring for Swelling

Although uncommon, significant swelling can occur inside a complete (circular) cast. This may place pressure on the nerves and blood vessels of the affected limb and requires urgent medical attention.

Seek immediate medical attention if you experience:

• Increasing pain that is not relieved by pain medication or elevation.
• Swelling of the fingers or toes.
• Numbness or pins and needles.
• Fingers or toes becoming cold, pale, blue, or purple.
• Difficulty moving your fingers or toes.
• A cast that suddenly feels excessively tight.

If any of these symptoms occur, contact your orthopaedic surgeon immediately or go directly to your nearest emergency department or trauma unit. The cast may need to be loosened or split urgently to restore normal circulation and prevent permanent damage.

General Cast Care

• Do not insert objects inside the cast to scratch an itch, as this may injure the skin and lead to infection.
• Do not trim, modify, or remove the cast yourself.
• Keep the cast clean and inspect it regularly for cracks, soft spots, or damage.
• Follow your surgeon's instructions regarding weight-bearing and activity.
• Attend all scheduled follow-up appointments so that your cast and injury can be assessed.

Proper cast care is essential for healing and helps reduce the risk of complications. If you have any concerns about your cast or your recovery, please contact your orthopaedic surgeon or healthcare provider.