Which device is used to treat congenital hip dislocation?

• A. Frog Cast
• B. Internal Rotator Board
• C. Night Splint
• D. Shantz Collar Brace

Answer: (A)

Treating congenital hip dislocation relies on keeping the hip in a position that promotes reduction of the femoral head into the acetabulum and then holds it there during early development. The frog cast achieves this by immobilizing the legs in a flexed, abducted position—the classic “frog-leg” posture. This abduction helps the femoral head seat into the acetabulum and stay stable, which is essential for proper joint formation and reducing dislocation in infants.

The other devices listed serve different purposes or treat other areas and do not provide the targeted hip abduction and flexion needed to reduce and stabilize a dislocated hip, so they aren’t appropriate choices for congenital hip dislocation.