pterygoid plate


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to pterygoid plate: pterygoid process, infratemporal fossa, Pterygopalatine fossa, Le Fort fracture

pterygoid plate

Either of a pair of thin, bony processes that arise from the sphenoid bone. They are termed medial and lateral pterygoid plates on each side, serve to bound the infratemporal fossa, and give origin to muscles of mastication.
See also: plate
References in periodicals archive ?
On computed tomography (CT) with intravenous contrast, a large, soft-tissue nasopharyngeal mass with extension into and erosion of the sphenoid sinus walls, pterygoid plates, and sella turcica and protrusion into the middle cranial fossa was found (figures 1 and 2).
12) Stage Description IA Involvement limited to the nose and/or naso- pharynx IB Extension into one or more sinuses IIA Minimal extension into the pterygopalatine fossa IIB Occupation of the entire pterygopalatine fossa with or without erosion of the orbital apex IIC Involvement of the infratemporal fossa with or without extension to the cheek or posterior to the pterygoid plates IIIA Erosion of the skull base (the middle cranial fossa/base of the pterygoids); minimal intra- cranial extension IIIB Erosion of the skull base; extensive intra- cranial extension with or without cavernous sinus invasion Table 1.
It had eroded the base of the pterygoid plates and infiltrated the lateral pterygoid muscle.