Pterygoid Process Of The Sphenoid Bone, Inferior View

Description

Pterygoid process anatomy dominates the inferior aspect of the sphenoid in this image, with the medial and lateral pterygoid plates descending from the body and greater wing to frame the pterygoid fossa. Medially, the medial pterygoid plate continues inferiorly toward the pterygoid hamulus, a hooklike projection that lies posterior to the hard palate and medial to the infratemporal region. Laterally, the lateral pterygoid plate forms the medial wall of the infratemporal fossa, while the scaphoid fossa near the root of the medial plate marks the proximal attachment area for tensor veli palatini. The posterior margin of the plates aligns with the region of the pterygoid canal (Vidian canal) traversing the sphenoid base toward the pterygopalatine fossa. These relationships matter when teaching the muscular and fascial mechanics of mastication and the soft palate, because the medial surface of the lateral pterygoid plate gives origin to the medial pterygoid muscle and the lateral surface anchors the lateral pterygoid, both acting on the mandible at the temporomandibular joint. Precise appreciation of the hamulus and scaphoid fossa helps explain hamular bursitis and referred palatal pain, and it clarifies why palatal dysfunction can follow trauma to the pterygoid region. Fixing the perspective to an inferior view makes the separation of the plates and the depth of the pterygoid fossa easy to judge. Small landmarks matter. Use this illustration in gross anatomy labs covering the skull base, dental and ENT teaching on the pterygomandibular region, and surgical anatomy references for Le Fort fracture patterns where pterygoid plate involvement is a defining feature. It also supports lectures on pterygopalatine fossa neurovascular pathways by orienting the pterygoid canal and adjacent sphenoid base landmarks from below. Anatomical accuracy verified by SciePro's Medical Advisory Board.