The Anatomical Structure Of The Greater Wing Of The Sphenoid

Description

Sweeping laterally from the body of the sphenoid, the greater wing (ala major) expands to form a large portion of the middle cranial fossa floor and the lateral wall of the skull. The sequence orients the viewer to its external (temporal) surface and internal (cerebral) surface, then tracks along the margins where it articulates anteriorly with the frontal bone, superolaterally with the parietal bone, and anterolaterally with the zygomatic bone at the sphenozygomatic suture. Along its root, the animation typically brings the foramina into view, with foramen rotundum and foramen ovale opening inferiorly toward the infratemporal fossa and foramen spinosum positioned posterolateral to ovale. Landmarks matter. Clinically, the greater wing is a key road map for skull base surgery and for interpreting trauma and CT of the lateral skull. Fractures that traverse the greater wing can involve the foramen spinosum and the middle meningeal artery, a classic setup for epidural hematoma, while lesions near foramen ovale affect the mandibular nerve (V3) and are approached in procedures such as percutaneous trigeminal rhizotomy. By moving along the sutural borders and pausing on each foramen, animation clarifies the three-dimensional relationships that get lost in a single lateral plate. Use this asset in head and neck anatomy teaching, neurosurgical and maxillofacial CME modules, radiology orientation to skull base foramina, or as a figure build for publications discussing epidural hematoma mechanisms and V2/V3 corridor approaches. Anatomical accuracy verified by SciePro's Medical Advisory Board.