Which description correctly identifies the Toronto hip abduction orthosis?

• A. Abducts the hip and is used in Legg-Calve-Perthes disease
• B. Used for knee realignment
• C. Prevents hip dislocation by external rotation
• D. Used to treat patellar dislocation

Answer: (A)

The key idea is hip containment through abduction to treat pediatric hip disease. The Toronto hip abduction orthosis is designed to hold the legs apart, maintaining the femoral head in the acetabulum during healing and remodeling in Legg-Calve-Perthes disease. This containment helps prevent further deformation of the femoral head and supports better long-term hip function. It isn’t used for knee realignment or patellar dislocation, and its main purpose isn’t to prevent dislocation by external rotation. So describing it as abducting the hip and being used in Legg-Calve-Perthes disease is the best fit.