Abstract

A 23-year-old man injured his foot in a motorcycle accident. Roentgenograms and computed tomography scans demonstrated a Hawkins Type III fracture-dislocation of the talus with a suspected disruption of the anterior tibiofibular ligament. Prompt anatomic reduction of the talus with rigid internal fixation was performed. Intraoperative stress roentgenograms confirmed the presence of a syndesmotic disruption. No cases of this injury have been reported in the literature. When no obvious fracture of the ankle mortise is present in a Hawkins Type III or IV talar fracture-dislocation, care must be taken to fully evaluate the osseous and ligamentous structures of the ankle to rule out an occult injury. Computed tomography scans, stress roentgenograms, intraoperative clinical examination, and direct visual inspection can all be used to aid in this evaluation.

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