[2] In the birth defect cleidocranial dysostosis, the anterior fontanelle never closes to form the bregma.

[3][4] It may be identified by blunt scraping of the surface of the skull and washing to make the meeting point of the sutures clearer.

Cranial height is defined as the distance between the bregma and the midpoint of the foramen magnum (the basion).

[6] The word "bregma" comes from the Ancient Greek βρέγμα (brégma), meaning the bone directly above the brain.

[7] This article incorporates text in the public domain from page 135 of the 20th edition of Gray's Anatomy (1918)