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.
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.
At the superior view, a bony bridge links the anterior and
posterior clinoid processes, corresponding to the calcification of interclinoids ligament (Fig.
The anterior, middle and the
posterior clinoid processes are located in the middle cranial fossa of the skull.
