Pterygoid Process Of The Sphenoid Bone, Lateral View

Description

Pterygoid process anatomy is centered on the paired pterygoid plates projecting inferiorly from the sphenoid bone at the junction of the body and greater wing, viewed from the lateral aspect. The lateral pterygoid plate dominates the profile, forming the lateral wall of the pterygoid fossa, while the medial pterygoid plate sits medial and slightly posterior, its inferior tip continuing toward the pterygoid hamulus. Superiorly, the scaphoid fossa at the root of the medial plate can be appreciated as a shallow depression, and the posterior margin aligns with the region of the pterygoid (Vidian) canal that traverses the sphenoid toward the pterygopalatine fossa. Bony landmarks read cleanly. These relationships matter in midface trauma and operative planning because fractures of the pterygoid plates are a defining feature of Le Fort patterns, and the lateral outline helps orient the surgeon or radiologist to the pterygomaxillary region without relying on the orbit or nasal framework. The pterygoid fossa provides origin for the medial pterygoid muscle, while the lateral pterygoid plate anchors the lateral pterygoid, so plate position directly informs masticatory biomechanics and temporomandibular joint force vectors. The pterygoid hamulus acts as a pulley for the tensor veli palatini tendon, a small structure with outsized relevance in velopharyngeal mechanics and some cases of hamular bursitis referred to the soft palate. Maxillofacial surgery texts, dental anatomy courses, and skull base modules in ENT education use this illustration to label the pterygoid plates, hamulus, and pterygoid fossa, then connect those landmarks to Le Fort fracture criteria and pterygopalatine fossa orientation for regional anesthesia discussions. Radiology educators can pair it with CT bone windows to train lateral landmark recognition at the sphenoid base. Anatomical accuracy verified by SciePro's Medical Advisory Board.