A micro-grinding drill measured to be 8–10 cm long and 0.3 cm in distal diameter is more suitable for the removal of the anterior and posterior clinoid processes
, opening the back of the internal auditory canal and other deep bone removal operations through the keyhole approach.
The sella turcica bridge (STB) is the true bony union of the anterior and posterior clinoid processes
while the clinoid enlargement (CLEN), is the overlapping of the anterior and posterior clinoid processes4 and not necessarily real bony fusion.5 Bridging of the sella turcica is considered as an anatomical abnormality and has been reported to occur in skeletal and dental malformations and in several syndromes.6
The fusion of anterior and posterior clinoid processes
or a calcification of interclinoid ligament termed as STB (Shah et al., Kucia et al.).
The particular emphasis of the cranial work was on the following locations: where those cranial nerves cross the borders of tentorium cerebelli, as they pass through cavernous sinus, where the particularly vulnerable spot was, the fibro-osseous canal beneath the posterior clinoid processes
, at sutura petrobasilaris, and where those nerves enter the orbit through fissure orbital is superior.
Anteriorly, it is bounded by a bony ridge, the tuberculum sella, and posteriorly by the dorsum sella and the posterior clinoid processes
. The anterior clinoid processes of the lesser wing of the sphenoid are lateral to the tuberculum sella and project posteriorly.
The anterior, middle and the posterior clinoid processes are located in the middle cranial fossa of the skull.
The cavernous sinus and the internal carotid artery are often explored for surgical operations and the complicated anatomy of this part of the skull makes it important for the surgeon to have a detailed detailed knowledge of the anterior, middle and the posterior clinoid processes and its possible variations.
(2005) mentions it as square plate like behind the hypophyseal fossa, ending superolaterally into posterior clinoid processes. Salma et al.
Detailed features of the dorsum sellae and the posterior clinoid processes were noted and classified into five types as specified in the results.
* Sella Turcica Bridge, presence of a continuous bony bar between the anterior and posterior Clinoid processes with a delimited round cavity below and the appearance of a separate enclosed hypophysial fossa (Fig.
* Clinoid Enlargement, presence of an enlargement of the anterior or posterior Clinoid processes that surpasses the Sella (S) cephalometric point (Fig.
The ST is circumscribed within the anterior and posterior clinoid processes
; variations in shape and size of these processes have been widely documented.