External Surface Of The Frontal Bone's Squamous Part, Anterior View

Description

Frontal bone squama dominates the anterior calvaria in this anterior view, forming the forehead as a smooth convex plate superior to the orbits. Midline landmarks include the glabella between the superciliary arches and the subtle metopic (frontal) suture line when persistent, while paired frontal eminences sit superolaterally on the external surface. Inferiorly, the squamous part meets the supraorbital margins, where the supraorbital notch or foramen typically lies medial to the frontozygomatic region; laterally, the zygomatic processes and temporal lines mark the transition toward the temporal fossa. Outer table contour is the focus. Surface anatomy of the frontal squama matters in trauma assessment and operative planning because blunt injury frequently produces frontal bone fractures that can extend toward the frontal sinus and anterior cranial fossa, raising concerns for cerebrospinal fluid leak and nasofrontal duct obstruction. The relation of the supraorbital margin to the supraorbital notch or foramen is a practical cue for supraorbital nerve blocks and for avoiding sensory deficits during coronal approaches. Crisp bony highlights across the forehead emphasize curvature, helping readers distinguish normal frontal bossing from pathologic contour changes seen in acromegaly, rickets, or craniosynostosis patterns affecting the frontal region. Use this illustration in gross anatomy and osteology teaching for skull landmark identification, in maxillofacial and neurosurgical texts describing frontal craniotomy or coronal incision planning, and in radiology education to correlate palpable surface points with CT bone windows of the anterior cranium. Anatomical accuracy verified by SciePro's Medical Advisory Board.