Dealing with Damp Casts: Solutions for Moisture Issues in Orthopedics

Gypsum is damp?

Hello, Doctor.
It has been raining a lot lately.
Although my ankle cast hasn't been exposed to the rain, it seems that due to the high humidity, the bottom of my foot enclosed in the cast feels sticky, almost like it's been trapped for too long.
The skin on my foot seems to be sticking to the gauze, and sometimes I can feel some skin flakes that are clearly not dry.
Do I need to have the cast redone, or is there a way to help it dry out? Thank you for your response!

Niming, 10~19 year old female. Ask Date: 2022/02/25

Dr. Wang Jiacheng reply Orthopedics

If your cast is made of plaster of Paris, it may need to be redone.
If it is made of resin material, you can simply use a hairdryer on a cool setting to dry it.

Reply Date: 2022/02/25

More Info

Dealing with moisture issues in orthopedic casts can be quite challenging, especially in humid conditions. It’s important to address these concerns promptly to avoid complications such as skin irritation, infection, or improper healing of the underlying injury.
Firstly, it’s crucial to understand that casts are designed to immobilize and protect the injured area, but they can also create a warm, moist environment that may lead to discomfort or skin issues. If your cast feels damp or sticky, it could be due to sweat, moisture from the environment, or even skin shedding that has become trapped inside the cast.
Here are some steps you can take to manage the situation:
1. Assess the Condition of the Cast: If the cast is only slightly damp and there are no signs of skin irritation or infection (such as redness, swelling, or discharge), you might be able to manage it without replacing the cast. However, if the cast feels excessively wet, or if you notice any skin issues, it’s best to consult your healthcare provider.

2. Drying Techniques:
- Air Drying: If possible, elevate your leg and allow the cast to air out in a dry, warm environment. Avoid direct heat sources like hair dryers, as they can damage the cast material.

- Fans: Using a fan to circulate air around the cast can help evaporate moisture. Ensure that the fan is not blowing directly on the cast but rather circulating the air in the room.

- Desiccants: Some people have found success using desiccants (like silica gel packets) placed near the cast (but not inside it) to absorb moisture. However, ensure that these do not come into contact with your skin.

3. Hygiene Practices:
- Skin Care: It’s essential to keep the skin around the cast clean and dry. You can use a damp cloth to wipe the exposed skin, but avoid getting the cast wet.
- Powders: Applying a small amount of talcum powder or cornstarch around the edges of the cast can help absorb moisture and reduce stickiness. Be cautious not to apply too much, as it can clump and create more issues.

4. Consulting a Professional: If the dampness persists or if you experience any discomfort, it’s advisable to return to your healthcare provider. They may recommend replacing the cast, especially if there are concerns about skin integrity or if the cast is not providing adequate support due to moisture damage.

5. Preventive Measures: In the future, consider discussing with your doctor about waterproof cast options if you expect to be in humid conditions frequently. Waterproof casts can be a great alternative, allowing for some exposure to moisture without compromising the integrity of the cast.

In summary, while it may not be immediately necessary to replace your cast, monitoring the situation closely and taking steps to manage moisture can help alleviate discomfort. If you notice any signs of skin irritation or if the cast feels excessively damp, seeking professional advice is the best course of action. Your health and comfort should always be the priority, and your healthcare provider can offer tailored solutions based on your specific situation.

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