Frontal Margin Of The Greater Wing Of The Sphenoid Bone, Superior View

Description

Sphenoid greater wing anatomy dominates the frame, with the frontal margin (margo frontalis) highlighted along the anterior and anterosuperior edge where the bone meets the frontal bone at the sphenofrontal suture. From a superior perspective, the greater wing reads as a thin, triangular lamina forming part of the middle cranial fossa floor, its serrated border angling anterolaterally toward the region of the pterion. Posterior to this margin, the endocranial surface broadens and slopes inferiorly toward the infratemporal and temporal surfaces that are not fully exposed in this single view. Bone texture and suture-like irregularity are emphasized. Attention to the frontal margin matters because it sits at a convergence of clinically loaded landmarks: small variations in the sphenofrontal and sphenoparietal sutures influence how you identify the pterion on skulls and in operative planning, and fractures traversing this area can extend toward the greater wing’s adjacent grooves for the middle meningeal vessels on the internal surface of the temporal squama and sphenoid. In craniofacial trauma, a break line near the anterolateral greater wing also raises concern for involvement of the lateral orbital wall and the sphenoid’s contribution to the orbit, even when the orbital surface itself is only inferred from the superior contour. The fixed superior viewpoint keeps the serrated articular edge and overall triangular geometry unambiguous for labeling and comparison across specimens. Use this illustration in gross anatomy lab materials on the cranial base, in radiology teaching files when correlating fracture trajectories on CT bone windows to sutural anatomy, or in neurosurgical and maxillofacial references that discuss pterional approaches and frontotemporal craniotomy landmarks. It also supports forensic and osteology publications focused on suture patterning at the anterolateral cranium. Anatomical accuracy verified by SciePro's Medical Advisory Board.