Isolated posterior malleolar ankle fractures

The isolated posterior malleolar fracture is a genuine clinicopathologic entity, albeit a relatively rare one. Frequency of occurrence is approximately 1% of all reported ankle fractures. It can be mechanistically explained within the parameters of the Lauge-Hansen classification. An understanding of the mechanism of injury is crucial to the diagnosis of associated soft tissue injury and to the correct management of the entire complex of peritalar disruption. Two cases of isolated posterior malleolar fracture are presented.