幼児の接地足蹠発育変化に関する研究

抄録

This is a study on the developmental change of the contact surface of foot sole, with infants from 2 to 4 years, and the changes were observed and mastered longitudinally according to the following items. 1. Arch ratio and Arch angle : both develop markedly from 3 to 4 years, the development of the male exceeding that of the female of respective ages. 2. Heal angle: it shows hardly any change from 2 to 3 years, but shows a considerable increase from 3 to 4 years. 3, Tiptoe angle: it becomes smaller with almost the same ratio through 2 years to 4 years. 4. Big toe angle: both the male of 2 years and the female of 3 years show a negative quantity in the big toe angle, but after 4 years, both sexes show increase in it, forming the big toe angle.