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 ?
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.
The total number of different forms of connection between the anterior and the middle clinoid process on the entire osteological sample is displayed in Table 6.
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).