Pterygomaxillary fissure

The pterygomaxillary fissure is a fissure of the human skull. It is vertical, and descends at right angles from the medial end of the inferior orbital fissure. It is a triangular interval, formed by the divergence of the maxilla from the pterygoid process of the sphenoid.

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Pterygomaxillary fissure
Left infratemporal fossa. (Pterygomaxillary fissure labeled at bottom left.)
Details
Identifiers
Latin	fissura pterygomaxillaris
TA98	A02.1.00.026
TA2	430
FMA	76627
Anatomical terminology [edit on Wikidata]

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It connects the infratemporal with the pterygopalatine fossa, and transmits the terminal part of the maxillary artery. The posterior superior alveolar nerve of the maxillary nerve goes from the pterygopalatine fossa to the infratemporal region via this fissure. The pterygopalatine plates are separated laterally from the posterior surface of the body of the maxilla by the pterygomaxillary fissure.

In older texts, the pterygomaxillary fissure is sometimes called the pterygopalatine fissure.