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Which of the following numbered regions on the axial CT scan of an adolescent ankle epiphysis corresponds to the displaced fragment in a Tillaux fracture, and which structure attaches to the displaced fragment?
Region 1, Anterior-inferior tibiofibular ligament (AITFL)
Region 2, Posterior-inferior tibiofibular ligament
Region 1, Anterior talofibular ligament (ATFL)
Region 2, AITFL
Region 3, Deltoid Ligament
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A 12-year-old sustains a twisting injury to his ankle while playing soccer. His skin is intact and he has no evidence of neurovascular compromise. An injury radiograph is shown in Figure A. A closed reduction is attempted to improve alignment. What is the next best step after reduction to optimize this patient’s outcome?
Splinting and admit for observation for compartment syndrome
Short leg cast and discharge with outpatient follow up
Long leg cast and discharge with outpatient follow up
Percutaneous pinning with casting immobilization
CT scan of the ankle
A juvenile Tillaux ankle fracture is caused by an avulsion injury involving which of the following structures?
Anterior-inferior tibiofibular ligament
Posterior-inferior tibiofibular ligament
Anterior talofibular ligament
Posterior talofibular ligament