[Combined lateral ligament-plasty and calcaneus osteotomy in recurrent foot dislocation].

The risk of a supination trauma is particularly high in patients with pathological calcaneus varus as opposed to physiological calcaneus valgus. If in these patients only the lateral ligaments are operatively treated after a trauma, there is a high incidence of recurrence, as the abnormal position of the calcaneus means that the supinating forces acting laterally have a stronger effect than in normal cases. We therefore suggest a combination of fibulotalar syndesmoplasty with osteotomy of the calcaneus according to Dwyer in such cases. In the last 7 years we have carried out this operation eight times with no recurrence in any of these patients so far. In four patients, a gait analysis was performed. It was established that the abnormal floor reaction forces seen in the presence of calcaneus varus normalize following the operation.