What is posterior Clinoid process?

The posterior boundary of the pituitary fossa is formed by the dorsum sellae, the supero-lateral angles of which are raised to form the posterior clinoid process. The posterior clinoid process anomalies may be responsible for the altered arrangement of the tentorium cerebelli which is attached to it.

What does Clinoid mean?

(klī′noyd) [Gr. kline, bed, + eidos, form, shape] Shaped like a bed.

What forms the anterior clinoid process?

The posterior border of small wing of sphenoid, smooth and rounded, is received into the lateral fissure of the brain; the medial end of this border forms the anterior clinoid process, which gives attachment to the tentorium cerebelli; it is sometimes joined to the middle clinoid process by a spicule of bone, and when …

Where is the anterior clinoid process?

Background: The anterior clinoid process (ACP) is located close to the optic nerve, internal carotid artery, ophthalmic artery, and can be easily injured in an ACP-related surgery. An anatomical study clearly defining the ACP is of great importance.

What is the Diaphragma Sellae?

The diaphragma sellae is a sheet of dura mater that forms the roof of the pituitary fossa. It is described as a two-layer sheet of dura mater that merges anteriorly with the dura covering the planum sphenoidale and the anterior cranial fossa and posteriorly with the dura covering the dorsum sellae and the clivus.

Where is clivus?

The clivus is located in the midline area of the skull base. It is part of the cranium, formed by the basilar part of the occipital bone and the corpus ossis sphenoidalis.

What artery passes through optic canal?

The optic canal is a very important structure due to the structures that pass through this canal, mainly the optic nerve and the ophthalmic artery.

What is Tuberculum Sella?

Gross anatomy The tuberculum sellae forms the anterior wall of the sella turcica, which houses the pituitary gland. It is an elongated ridge located immediately posterior to the chiasmatic groove, hence is related to the optic chiasm and anterior portions of the optic tracts.

What does the Clinoid process do?

The posterior clinoid processes deepen the sella turcica, and give attachment to the tentorium cerebelli.

What is the function of diaphragma sellae?

The diaphragma sellae forms the roof of the sella turcica (see Figure 10-1). It covers the pituitary gland, except for a small central opening in its center, which transmits the pituitary stalk.

What is the purpose of clivus?

The clivus is an important landmark for checking for anatomical atlanto-occipital alignment; the clivus, when viewed on a lateral C-spine X-ray, forms a line which, if extended, is known as Wackenheim’s clivus line. Wackenheim’s clivus line should pass through the dens of the axis or be tangential to it.