Measurement of head circumference is one of the clinical parameters widely used as an index of brain growth and development. The study of normal head circumference for Negro, Japanese, Alaskan, Eskimo, and Russian has been reported by Nellhaus.
The author has studied whether the Nellhaus' composite graph is useful for the Japanese infants or not. Measurements were made on 16 healthy newborn infants at Shiba, Minato-ku, Tokyo. All measurements were made every monthly by one observer, during the first year. The data lied within two standard deviations. Thus Nellhaus composite graph has been useful in Japanese infants.
The serial measurements of the head circumference at periodic intervals should be routine part of the physical examination of infants and children. Borderline cases of normal or abnormal head circuniference are:
1) The measurement, which falls slightly outside or on two plus or minous standard deviations.
2) The serial head measurmeents which reflect an abnormal growth pattern, even though each individual measurement is well within normal limits.
Evaluation of horde line case is best obtained by observation, palpation and use of skull roentgenograms (especially the cranial index of Cronqvist).
View full abstract