DEVELOPMENT OF THE CENTER FOR THE CUBOID BONE IN NEWBORN INFANTS

Abstract

A roentgenographic study of the osseous development of newborn white and Negro infants, measured in terms of the presence or absence of the center of ossification for the cuboid bone,¹has been made in order to investigate the association between osseous development and (1) certain other criteria of maturity, namely, birth weight, crown-heel length at birth and gestational age and (2) certain maternal characteristics, namely, parity and age. As has been pointed out, the conclusions are based on the presence or absence of the center of ossification for the cuboid bone in newborn infants. The study thus classifies the infants, according to their osseous development, into two sharply defined groups: (1) those in whom the center was present at the time a roentgenogram was made and (2) those in whom the center was not present at that time. It is obvious that study of the presence or absence of