Why is plaster of Paris used in clubfoot casting?

Clubfoot casting is usually a staged process. The clinician gently positions the foot and applies a new cast to hold that position. As the soft tissues adapt, the next cast can guide the foot further toward a more useful alignment. Plaster is practical for this work because it can be shaped while being applied and provides a firm shell after it sets.

The cast generally includes the foot and part of the lower leg so the correction is supported above the ankle. A clinician checks the skin, circulation and fit at each change. Casting is only one phase of care; a brace may be recommended afterward to help maintain the correction.

Keep the cast dry and do not insert objects inside it. Check the toes for colour, warmth and movement, and observe whether the baby seems unusually distressed. Follow the clinic’s instructions for appointments because a loose, wet or damaged cast may no longer hold the intended position.

Contact the casting team urgently if toes become cold, pale, blue or difficult to move, or if swelling, persistent crying, foul smell, wetness or rubbing develops. A cast that slips, cracks or becomes tight needs review rather than home adjustment.

Ask how often casts will change, how to protect the skin, what toe changes are concerning, and when bracing may begin. Read more about [Plaster of Paris](/materials/plaster-of-paris/) and [Clubfoot Casting](/treatments/reconstructive-orthopedic-surgery/clubfoot-casting/).