[The physical development of infants and small children. 3. Head circumference, head length, length-width index--a longitudinal study].

The head breadth and head length of 175 children (84 boys, 91 girls) were investigated from birth up to the age of three years. Boys were shown to have greater distance values. Growth increments and velocity did not differ between boys and girls. The velocity was highest in the first trimenon. The children of this study had a greater head length, therefore the value of their cephalic index was lower as described in previous investigations. The phenomenon of debrachycephalisation observed in our populations confirms previous observations.