Removable cast for a broken arm: use and safety

A clinician selects support according to the fracture's location, alignment, stability, swelling, and stage of healing. A distal radius fracture, often called a broken wrist, may need a cast or another form of immobilisation. Removability does not mean the bone is ready for unrestricted use: taking the support off too early or loading the arm can disturb healing.

The cast should hold the wrist and forearm in the position prescribed. Hand swelling and wrist pain can change as swelling settles, so planned checks matter.

Wear the removable cast for the schedule given by the fracture team, including during sleep if instructed. Keep it dry, inspect the skin when removal is allowed, and refit it snugly without making it tight. Elevate the hand when swollen and move the fingers regularly if permitted. Do not drive, lift, or return to sport until cleared. Follow-up imaging may determine whether closed reduction, fracture casting, or fracture fixation surgery is needed; hand therapy can help restore movement after protection is reduced.

Seek urgent help if fingers become blue, pale, cold, increasingly numb, or difficult to move; if swelling rises quickly; or if pain becomes severe despite elevation and prescribed treatment. Contact the fracture team for a cracked, wet, loose, or rubbing cast, new pressure sores, fever, or a sudden change in alignment. Never reshape or pad the device without advice.

Ask exactly when removal is allowed, how much movement or lifting is safe, and what symptoms mean the cast needs adjustment. Ask how follow-up will confirm healing and when [Hand Therapy](/treatments/physiotherapy-and-rehabilitation/hand-therapy/) should begin.