greater wing of sphenoid bone

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great·er wing of sphe·noid bone

(grā'tĕr wing sfē'noyd bōn)
Strong squamous processes extending in a broad superolateral curve from the body of the sphenoid bone. The greater wing presents these surfaces (facies): 1) cerebral surface forms anterior third of the floor of the lateral portion of the middle cranial fossa; 2) temporal surface forms the deepest portion of the temporal fossa; 3) infratemporal surface forms the "roof" of the infratemporal fossa; 4) orbital surface forms posterolateral wall of orbit. The greater wing forms the inferior border of the supraorbital fissure and is perforated at its root by the rotundum, ovale, and spinosum foramina and the pterygoid canal.
References in periodicals archive ?
36) The lateral sphenoid cephalocele can be further divided into type 1 (which herniates into a pneumatized lateral recess, may simulate a retention cyst on CT, and may present with CSF leak and headache) and type 2 (which herniates into or through the greater wing of the sphenoid bone and may present with seizure or headache).
These recurrent lesions tended to involve the greater wing of the sphenoid bone.
Garcia (3) reported one case and Leblanc et al (4) reported three in which a bony defect in the base of the greater wing of the sphenoid bone near the foramen rotundum allowed a meningoencephalocele to protrude into the pterygopalatine fossa.
High-resolution computed tomography (CT) of the skull base demonstrated a bony overgrowth, with sclerosis of the left temporal bone (particularly in the squamous portion and in the anterior part of the petrous pyramid) and the left greater wing of the sphenoid bone.

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