The greater, or anterior fontanel, is a lozenge-shaped space that is situated at the junction of the sagittal and the coronal sutures.
The lesser, or posterior fontanel, is represented by a small triangular area at the intersection of the sagittal and lambdoid sutures.
The temporal, or casserian fontanels, have no diagnostic It is customary to measure certain critical diameters and circumferences of the newborn head.
The head position and degree of skull ossification result in a spectrum of cranial plasticity from minimal to great and in some cases, undoubtedly contribute to fetopelvic disproportion, a leading indication for cesarean delivery.
Cunningham, F. Gary; Leveno, Kenneth J.; Gilstrap, Larry C. III; Hauth, John C. (March 31, 2005).