Maxillary Surface Of The Sphenoid's Greater Wing, Anterior View

Description

Ala major ossis sphenoidalis fills the frame, focusing on the facies maxillaris of the greater wing in anterior aspect. This triangular area lies on the inferomedial surface of the greater wing, positioned lateral to the body of the sphenoid and superior to the posterior maxilla, where it helps form the posterior boundary of the pterygopalatine region. Near its medial portion, the foramen rotundum pierces the bone, opening anteriorly toward the pterygopalatine fossa and sitting superior to the pterygoid process while remaining medial to the broader lateral contour of the wing. Bone margins are crisp. For surgical anatomy, the maxillary surface matters because it guides orientation to the foramen rotundum and the course of the maxillary nerve (CN V2) as it exits the middle cranial fossa en route to the pterygopalatine fossa. Approaches that traverse the pterygopalatine fossa or target V2, including percutaneous interventions for trigeminal neuralgia variants and endoscopic transnasal routes for tumor work, rely on a precise mental model of this bony corridor and its anterior aperture. The anterior perspective helps you separate the facies maxillaris from adjacent sphenoid surfaces that contribute to the orbit and infratemporal fossa, reducing common learner confusion between foramina of the greater wing. Use this illustration in gross anatomy and neuroanatomy teaching when covering the skull base, trigeminal nerve divisions, and pterygopalatine fossa boundaries, and in otolaryngology or maxillofacial references discussing endoscopic access routes near the posterior maxilla and sphenoid. It also fits radiology primers that correlate CT bone windows with skull base foramina identification. Anatomical accuracy verified by SciePro's Medical Advisory Board.