Radiological evaluation of peroneal tendon pathology associated with calcaneal fractures.

Review of MRI, CT, and radiographic views of 21 intraarticular calcaneal fractures revealed eight cases of peroneal tendon subluxation or dislocation. Routine radiographs were nondiagnostic for the soft tissue injury in five of these eight patients. The anatomic relationships between the tendons, retinaculum, and fibular groove could typically be identified easily on MRI or CT scan. In this combined injury, recognition of the peroneal tendon subluxation or dislocation and its proper management may reduce subsequent tendon dysfunction; it may also alter the calcaneal fracture management.