Frontal Bone Showing Its Parietal Margin, Lateral View

Description

Frontal bone anatomy dominates this lateral cranial perspective, with the parietal margin forming a thick, serrated edge along the superior and posterolateral aspect of the squama frontalis. Along this border, the coronal suture line is implied where the frontal bone articulates with the parietal bone, while the smoother temporal surface lies inferiorly as the frontal squama curves toward the lateral orbital region. Posterior to the frontal eminence, the margin appears uneven and interdigitated, a contour that contrasts with the broader, flatter external surface of the frontal bone. Coronal suture morphology matters in both growth assessment and trauma. Premature fusion (coronal craniosynostosis) restricts anteroposterior expansion of the frontal and parietal bones and is linked to anterior plagiocephaly, so a precise depiction of the parietal margin helps learners understand where synostosis occurs relative to the frontal squama and frontoparietal junction. The same edge serves as a practical landmark during frontotemporal craniotomy planning and in describing fracture propagation across sutures, since sutural interdigitation can arrest or redirect fracture lines while also complicating radiographic interpretation at the frontoparietal region. Bone thickness is obvious here. That supports discussions of burr hole placement and the variable resistance encountered along sutural bone compared with adjacent calvaria. Neuroanatomy and head and neck courses can pair this illustration with surface anatomy and osteology labs to reinforce sutural terminology, cranial landmarks, and the relationship between the frontal bone’s lateral contour and the coronal suture. Medical publishers can also use it in atlases or operative approach overviews where a single, fixed lateral viewpoint clarifies the frontoparietal boundary without distraction. Anatomical accuracy verified by SciePro's Medical Advisory Board.