Anatomic characteristics of the dural sheath of the trigeminal nerve

Abstract

The cribriform area of Meckel's cave, which divides the dural sheath of the trigeminal nerve into 2 distinct compartments, may play an important role in tumor growth and surgical planning. © 2015 Wiley Periodicals, Inc. Head Neck 38: E185-E188, 2016.

Bilateral Extensive Ossification of the Posterior Petroclinoid Ligament: An Anatomical Case Report and Literature Review

“…8,11,18,26 Hence knowledge of the anatomical characteristics of both the dural entrance to Meckel's cave and the dural sheath of the trigeminal nerve are important from a clinical point of view. 18,[26][27][28] Ossification of the tentorium cerebelli over the trigeminal notch (ossification of the pPCL) should be taken into account during surgical decompression of the trigeminal nerve. 11,18 The oculomotor triangle is a space formed by the pPCL, together with some other structures, that exposes the distal intracavernous carotid artery; it is an important access corridor to the medial compartment of the cavernous sinus and for approaches to the interpeduncular fossa.…”

The Transformation of the Balloon Shape in Percutaneous Balloon Compression for Trigeminal Neuralgia

“…MC is formed by continuous dura mater, which isolates its contents from the middle cranial fossa below and the temporal lobe above. 11,13,14 The dural sheaths cover the 3 major divisions of the trigeminal nerves and extend far beyond the points that the divisions join the ganglion. For the mandibular branch, the dural sheath leaves the middle fossa through foramen ovale and fuses with the epineurium extracranially (Fig.…”

“…8A). 11,13 For a correct placement, a fully in ated balloon should include two tunnel-like ends and one large belly.…”

“…8B). Indeed, there is such a septum named the cribriform area by Li, Y. et al 11 The cribriform area also explains why the space accommodating the third branch is di cult to enter (Fig. 5), and there is no smooth transition between a cucumber and an almost round shape (Fig.…”

“…Furthermore, the dural structure of the third branch, whether or not the dural sheath stretches out of the foramen ovale, is still controversial. [11][12][13] The forepart of the tentorium and the dural band superior to the opening of the MC (that is, the porus trigeminus) stretches out into the subarachnoid cisternal space. If the balloon catheter goes beyond the porus trigeminus and partially enters the subarachnoid space, then the dura will bend the head of the balloon downward.…”