Very limited information is available on the normal size of the anterior fontanelle but this measurement may be of value in the early diagnosis for example of bone diseases, and of hypothyroidism. The purpose of this study was to provide a reference range applicable to the first two years of life, using a larger sample population than previous studies. Measurements were made of the anterior-posterior and transverse dimensions in 334 full term infants between birth and the age of 24 months. Despite the wide variation, both in size and age of closure, it proved possible to define a reference range and also, for the first time, to present a centile chart.
AchesonRMJeffersonE. Some observations on the closure of the anterior fontanelle. Arch Dis Child1954; 29: 196–198.
2.
SmithDWPopichGA. Large fontanels in congenital hypthyroidism: A potential clue toward earlier recognition. J Pediatr1972; 80: 753–756.
3.
DucGLargoRH. Anterior fontanel: Size and closure in term and preterm infants. Pediatrics1986; 78: 904–908.
4.
RobinsonDCHallRMunroDS. Graves' disease, an unusual complication: Raised intracranial pressure due to premature fusion of skull sutures. Arch Dis Child1969; 44: 252–257.
5.
PopichGASmithDW. Fontanels: Range of normal size. J. Pediatr1972; 80: 749–752.
6.
DaviesDPAnsariBNCookeTJH. Anterior fontanelle size in the neonate. Arch Dis Child1975; 50: 81–83.
7.
TamKL. Wide sutures and large fontanels in the newborn. Am J Dis Child1976; 130: 386–390.
8.
FaixRG. Fontanelle size in black and white term newborn infants. J Pediatr1982; 100: 304–306.
9.
ScammonREAdairFL. Geometric relationships of the frontal fontanelle in infancy. Anat Rec1930; 46: 349–363.
10.
ElsässerCL. Der Weiche Hinterkopf: ein Beitrag zu Physiologie und Pathologie der ersten Kinderheit, S.9 et seq. Stuttgart and Tübigen 1843. Cited in reference 5.
