[Foot dislocation in the child].

Fibulotalar distortions of the ankle are differentiated from distortions with and without instability, as well as instabilities with and without decompensation. Physiological lateral tilting of the talus is shown to be dependent on age and sex as well as on the kind of ligament lesion--avulsion or rupture--likewise dependent on age. The factors involved in the early or late prognosis are discussed. A prospective study is introduced, which differentiated is between primary and secondary distortions or more. Primary distortions (without an osseal lesion) are treated conservatively. Secondary additional distortions with no case history of compensation for the instability are treated operatively, as are avulsions with displaced osseal fragments.