middle clinoid process


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middle clinoid process

[TA]
an inconstant, small spur of bone on the body of the sphenoid, posterolateral to (and occasionally continuous with) the tuberculum sellae; it is around this point that the internal carotid artery makes a 180-degree turn, changing direction from anterior to posterior to join the cerebral arterial circle.
Synonym(s): processus clinoideus medius [TA]
References in periodicals archive ?
Unilateral fusion of the posterior with middle clinoid process (unilateral) was found in one skull, and fusion of the three clinoid processes was found in three skulls, unilateral in one and bilateral in two.
Any fusion of the posterior with anterior or middle clinoid processes was also noticed.
Unilateral fusion of the posterior and middle clinoid processes was seen in one skull.
The carotico-clinoid foramen is an inconstant structure, which is located in the anterior cranial fossa composed by the ossification of a fibrous ligament (1) that begins on the anterior clinoid process and binds to the middle clinoid process. (2) Carotico-clinoid foramen allows the passage of one of six segments of the internal carotid artery, the clinoidal segment.
The occurrence of partially or completely ossified ligamentous connection between the anterior and middle clinoid processes forming the carotico-clinoid foramen was observed and noted.
The anterior edge of the pituitary fossa is completed laterally by the middle clinoid process and the posterior boundary is formed by the dorsum sellae, the superolateral angles of which are expanded to form the posterior clinoid process (1).
The anterior edge of the of the sellla turcica is completed laterally on either side by the middle clinoid process (1).
The caroticoclinoid foramen was first described by Henle (1885) as a bony foramen formed by merging of the anterior and middle clinoid processes' tops.
The caroticoclinoid foramen (foramen caroticoclinoideum) is formed when tops of the anterior and middle clinoid processes merge on the upper side of sphenoid bone.