Fig. 11

Bilateral vertical talus in a 23-day-old boy. Dorsal sagittal view a in neutral position, a dorsal dislocation of the navicular on the head of the talus. b Irreducibility of the dorsal displacement of the navicular in maximal plantar flexion. (N = navicular bone, T = Talus bone, MM = Medial malleolus of tibia)