The sprain fracture of the calcaneus revisited

Fractures of the anterior–superior process of the calcaneus are considered to be unusual. The fracture is difficult to visualize in standard X-ray projections and is easily missed, and often misdiagnosed as a sprain of the anterior talo-fibular ligament. The usual injury is an avulsion-type fracture, which generally has good prognosis. There exists another type of injury involving a compression fracture of the anterior articular process of the calcaneus. They differ from the avulsion injuries in management and prognosis. Neglected or delayed treatment can often lead to prolonged disability and significant derangement of the calcaneo-cuboid joint. A case of compression fracture of the anterior–superior process of the calcaneus treated by open reduction and internal fixation is presented.