Infratemporal Surface Of The Greater Wing Of The Sphenoid, Inferior View

Description

Greater wing of the sphenoid is presented from an inferior perspective, focusing on its infratemporal surface on the external cranial base. Foramen ovale sits anteromedial to foramen spinosum within the rectangular field of bone, with the spine of the sphenoid projecting posterolaterally as a palpable bony landmark near the spinosum. Medially, the surface approaches the root of the lateral pterygoid plate and the scaphoid fossa region, while laterally it transitions toward the squamous temporal bone at the sphenosquamosal suture line. Bony margins are crisp. Foramen ovale matters because it is the principal gateway for the mandibular nerve (CN V3) leaving the middle cranial fossa, often accompanied by the accessory meningeal artery, an emissary vein, and in some individuals the lesser petrosal nerve, so its shape and relationship to foramen spinosum directly inform safe trajectories in percutaneous trigeminal procedures. Foramen spinosum transmits the middle meningeal artery and vein plus the meningeal branch of V3 (nervus spinosus), and its proximity to the sphenoid spine helps orient surgical and radiologic localization of the middle meningeal groove complex implicated in epidural hematoma. The inferior viewpoint is the one you want when correlating dry skull anatomy with subcranial approaches and with CT bone windows where these foramina must be distinguished from adjacent accessory foramina. Use this illustration in head and neck anatomy courses, dental and maxillofacial teaching on V3-related anesthesia, and neurosurgical or ENT skull base references that discuss percutaneous access through foramen ovale and vascular risk at foramen spinosum. It also supports radiology atlases and exam preparation that require precise foraminal identification on the infratemporal aspect of the sphenoid. Anatomical accuracy verified by SciePro's Medical Advisory Board.