frontal crest frontal crest the frontal crest is a ridge on the internal surface of the squamous part of the frontal bone formed by the inferior convergence of the two edges of the sagittal sulcus. the frontal crest gives attachment to the falx cerebri. frontal crestfrontal bone. inner surface. (frontal crest visible at center but not labeled.)frontal crestdetailsidentifierslatincrista frontalista98a02.1.03.016ta2536fma57415anatomical terms of bone