Orthopedic cast
A rigid external support, usually made of plaster or fiberglass, that immobilizes a bone or joint during healing.
Fracture healing: The biological process by which broken bone is repaired and remodeled. A cast limits motion at the fracture so new bone can bridge the break.
Short arm cast: A cast extending from below the elbow to the hand, leaving the fingers exposed. It commonly immobilizes wrist and distal forearm injuries.
Removable splint: A rigid or semi-rigid support that can be taken off without cutting it. Unlike a circumferential cast, it allows access for swelling checks and skin care.
Pressure ulcer: A localized injury to skin or underlying tissue caused by sustained pressure or shear. A poorly fitting cast can create persistent pressure over a bony prominence.
Bone fracture: A break or crack in the continuity of a bone. Fractures are a principal reason for applying an orthopedic cast.
Plaster of Paris: A calcium sulfate powder that hardens after mixing with water. Its setting reaction forms the rigid shell of traditional casts.
Long arm cast: A cast extending from the upper arm to the hand, immobilizing the elbow and forearm. It restricts elbow rotation when a shorter cast would not control the injury.
Orthosis: An externally worn device that supports, aligns, or improves the function of a body part. A cast is a temporary, non-removable form of external orthotic support.
Cast-related skin injury: Damage to skin beneath or at the edges of an orthopedic cast. Moisture, friction, and pressure can cause irritation, blisters, or wounds.
Reduction (orthopedics): The realignment of displaced bone fragments or a dislocated joint. A cast may hold an injury in position after reduction.