Which hip immobilization device is the double hip spica cast?

• A. Single Hip Spica Cast
• B. 1 1/2 Hip Spica Cast
• C. Double Hip Spica Cast
• D. Pantalon Cast

Answer: (C)

The main idea tested is the extent of immobilization described by the cast name. A double hip spica cast means immobilizing both hips and both legs, with the cast spanning from the chest down the legs on both sides. This is used when pathology or post-op needs stabilize both hips at once.

That’s why this option fits best: it explicitly denotes two hips being immobilized. The other options describe casts that do not immobilize both hips—the single hip spica covers only one hip and leg, the 1 1/2 hip spica is a variation not providing true bilateral hip immobilization, and a pantaloon cast is a different, pants-like configuration not equivalent to a bilateral spica.