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Anterior Fontanel Bone In Siblings

THEODORE V. BOROIAN, MC; CHARLES R. ATTWOOD, MC; J. RICHARD JACONETTE, MC
Am J Dis Child. 1964;108(6):625-626. doi:10.1001/archpedi.1964.02090010627007.
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The anterior fontanel bone is a true accessory bone arising from a separate ossification center in the anterior fontanel.1 Although the incidence is unknown, its extreme rarity is attested to by the fact that Caffey has personally encountered only two examples in 35 years at Babies' Hospital; he illustrates these in the fourth edition of his textbook.2 The bone probably appears sometime after birth, since not a single example was found in 10,000 newly born infants examined by Caffey.3

Recognition of the presence of a bone in the anterior fontanel becomes clinically important when the pediatrician, noting that the anterior fontanel has apparently closed prematurely, suspects micrencephaly or craniosynostosis. Actually, neither of these conditions is associated with anterior fontanel bones; "the anterior fontanel bone has always been found in normal children whose sutures and other fontanels closed normally."3

There have been no previous reports of anterior

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