Chopart's fracture–dislocation is a type of broken and dislocated bone in the foot. Specifically it is a dislocation of the mid-tarsal (talonavicular and calcaneocuboid) joints of the foot, often with associated fractures of the calcaneus, cuboid and navicular.
Signs and symptoms
- The foot is usually dislocated medially (80%) and superiorly, which occurs when the foot is plantar flexed and inverted.
- Lateral displacement occurs during eversion injuries.
- Associated fractures of calcaneus, cuboid and navicular are frequent.
- Open fractures occur in a small percentage.
Diagnosis is made on plain radiograph of the foot, although the extent of injury is often underestimated.
Treatment comprises early reduction of the dislocation, and frequently involves open reduction internal fixation to restore and stabilise the talonavicular joint. Open reduction and fusion of the calcaneocuboid joint is occasionally required.
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