Tibiotalar dislocation without fracture is an unusual injury. Seventy-three cases have been reported in the literature. Closed posteromedial dislocation of the tibiotalar joint without fracture or diastasis is a very rare phenomenon. Eight cases have been reported. A case of this unique injury is presented, along with a literature review of purely ligamentous ankle dislocations. The proposed mechanism and classification of these injuries are summarized.
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