Greater Wing Of The Sphenoid

Description

Greater wing of the sphenoid forms a broad, laterally facing plate of the cranial base, positioned lateral to the body of the sphenoid and anterior to the petrous part of the temporal bone. From this lateral perspective, its superior margin participates in the pterion region where the sphenoid meets the parietal and frontal bones, while the anterolateral border reaches the zygomatic bone to contribute to the lateral orbital wall. Inferiorly, the greater wing curves into the infratemporal surface, continuous with the root of the pterygoid process posteriorly and lying superior to the maxillary region. Sutural geometry matters. Clinical value centers on the greater wing as a corridor of foramina and fracture lines. The foramina rotundum, ovale, and spinosum perforate the greater wing near the infratemporal surface, transmitting V2, V3, and the middle meningeal artery, so a lateral bony view helps orient relationships relevant to trigeminal neuralgia procedures, percutaneous rhizotomy trajectories, and vascular injury patterns. At the pterion, a thin greater wing segment underlies the anterior branch of the middle meningeal artery, explaining why lateral skull trauma can produce an epidural hematoma even when the external injury appears minor. Crisp lighting on the ridges and margins makes the sutural interfaces and bony thickness changes easier to teach without distraction from adjacent cranial bones. Use this illustration in neuroanatomy and head and neck anatomy courses when introducing the cranial base, the infratemporal fossa, and foraminal transmitters, or in neurosurgical and maxillofacial references discussing pterional approaches and lateral skull fracture patterns. It also fits radiology teaching files as an anatomic companion for CT bone-window orientation around the sphenoid, pterion, and middle cranial fossa. Anatomical accuracy verified by SciePro's Medical Advisory Board.