Squamous Portion Of The Frontal Bone, Lateral View

Description

Frontal squama dominates the lateral cranial vault in this image, forming the anterior portion of the calvaria as it curves superiorly from the supraorbital region toward the coronal suture. The squamous portion lies anterior to the parietal bone and meets it along the coronal suture, while its posteroinferior aspect approaches the greater wing of the sphenoid near the pterion. Subtle surface contours such as the frontal eminence and the superior temporal line are appreciable on the external table, helping orient superior, inferior, anterior, and posterior relationships on a single side of the skull. Bone topography is the story here. For trauma education, the lateral profile of the frontal bone clarifies how impact forces can propagate into the coronal suture and toward the pterion, a thin region where fractures may endanger the middle meningeal artery via adjacent temporal bone anatomy. Neurosurgical planning often references this outer-surface curvature when discussing frontal craniotomy outlines, burr-hole placement relative to the frontal eminence, and avoidance of frontal sinus violation, which sits anteroinferiorly behind the superciliary region. The lighting and smooth shading make shallow ridges legible without obscuring the overall contour, which is what you need when teaching sutural anatomy and cranial landmarks. Use this illustration in gross anatomy and osteology modules covering the skull and cranium, in radiology teaching notes to correlate palpable landmarks with CT bone windows, and in neurosurgery or emergency medicine materials addressing frontal bone fractures, coronal suture diastasis, and the clinical relevance of the pterion region. Anatomical accuracy verified by SciePro's Medical Advisory Board.