Greater Wing Of The Sphenoid, Posterior View

Description

Greater wing of the sphenoid occupies the lateral floor of the middle cranial fossa, its endocranial surface presenting as a broad concavity directed superiorly toward the temporal lobe. Posteriorly, the greater wing approaches the petrous part of the temporal bone and the squamous temporal, while anteriorly it contributes to the region of the superior orbital fissure at the junction with the lesser wing. Several apertures typically perforate this plate of bone, including the foramen rotundum anterosuperiorly, the foramen ovale posteroinferiorly, and the foramen spinosum posterolaterally, each set within the greater wing’s posterior aspect. Bone contours read well. Clinical relevance centers on neurovascular transit through the greater wing and the adjacent middle cranial fossa. The foramen ovale transmits the mandibular nerve (V3) and accessory meningeal artery, making its osseous margins a practical landmark for percutaneous trigeminal procedures, while the foramen spinosum carries the middle meningeal artery, whose injury at the skull base is a classic source of epidural hematoma. Teaching the greater wing from a posterior, intracranial perspective also helps clarify why lesions or fractures in this region may present with temporal lobe contusion and with sensory or motor findings in the V3 distribution. The static lighting and separation of bony edges support identification of foramina without reliance on surrounding soft tissue. Neuroanatomy and head and neck anatomy courses can pair this illustration with cranial nerve pathways and the boundaries of the middle cranial fossa, and surgical atlases can reference it when discussing transforaminal approaches and skull base fracture patterns. Radiology teaching files may also use it as a bony correlate when orienting CT of the sphenoid and adjacent foramina. Anatomical accuracy verified by SciePro's Medical Advisory Board.