Squamosal Margin Of The Sphenoid's Greater Wing, Lateral View

Description

Sphenoid greater wing anatomy dominates this lateral skull view, with the squamosal margin traced as a thin, serrated border along the posterolateral edge of the ala major. From this fixed perspective the margin sits lateral to the middle cranial fossa and meets the squamous part of the temporal bone, forming the sphenosquamosal suture as it runs toward the pterion region superiorly. Anterior and inferior to this border, the greater wing expands into the temporal and infratemporal surfaces, creating the bony backdrop for the temporalis muscle above and the infratemporal fossa below. Fine edge detail matters here. Clinically, the squamosal margin and its adjacent sutural anatomy are key landmarks when teaching lateral skull fracture patterns and surgical corridors. The pterion lies near the superior extent of the greater wing, and fractures in this neighborhood raise concern for injury to the middle meningeal artery deep to the temporal squama, a classic setup for epidural hematoma and an anatomic rationale for burr-hole placement. For skull base surgery and craniofacial work, a crisp view of the sphenosquamosal relationship also helps when discussing sphenoid wing hyperostosis with meningioma, postoperative bony remodeling, or how sutures can mimic fracture lines on CT. Educators can drop this illustration into head and neck anatomy modules, osteology practicals, and radiology teaching files that compare sutures with traumatic lucencies on thin-slice bone windows. It also suits neurosurgical and ENT atlases describing pterional craniotomy planning and the lateral bony limits of the temporal fossa and middle cranial fossa. Anatomical accuracy verified by SciePro's Medical Advisory Board.