Talonavicular dislocation with associated cuboid fracture following low-energy trauma.

Isolated talonavicular dislocations are uncommon injuries, usually occurring as a result of high-energy trauma. As a result extensive disruption of the midfoot ligamentous structures commonly occur with these injuries, often resulting in a poor outcome. Due to its rarity these injuries remain poorly understood, and several opinions exist on the probable mechanisms of injury and the optimal treatment. Five main injury types have been classified based on the deforming forces and direction of displacement; medial, lateral, longitudinal, plantar, and crush. However new mechanisms and injury patterns continue to be reported. We report a case of a medial swivel type talonavicular dislocation, associated with a cuboid body fracture, which is previously undescribed.