[Idiopathic severe valgus deformity of the knee in children. Apropos of 2 cases].

The authors have reviewed two cases of important and idiopathic deformity in children coming from Africa. In the third year of life, a valgus deformity of a knee occurs spontaneously and increases rapidly in a previously healthy child. Varus deformity of the other knee follows but seems to be just a mechanical consequence of the valgus deformity. The pathological lesions observed radiologically concern mainly the metaphyseses. General skeletal or metabolic disease, malnutrition or sickle-cell disease are not found.