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 ?
Tumors invaded the greater wing of sphenoid bone in one case, anterior clinoidal process in ten cases, olfactory groove or sphenoidal platinum in eight cases, cavernous sinus in three cases, and the third ventricle in three cases.
Position of the foramen ovale in the greater wing of sphenoid bone is close to the upper end of posterior margin of lateral pterygoid plate, lateral to the foramen lacerum and most commonly medial to foramen spinosum.
There was an evidence of pseudoarthosis formation with greater wing of sphenoid bone with thinning of greater wing.
INTRODUCTION: Pterion is a significant region which is marked by the junction of frontal bone, parietal bone, squama temporalis and the greater wing of sphenoid bone and forms the floor of temporal fossa.

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