Abstract
Objective: The aim of our study was to investigate the detailed endoscopic anatomy of the intracisternal portion of the oculomotor nerve and to update the present knowledge of its related anatomy with the newest research on the topography of the arachnoid membrane system of the skull base.
Methods: This study was performed on 50 fresh human cadaveric specimens post-mortem not more than 72 h. In each specimen, the intracranial arterial system was injected with red gelatin solution. We used the endoscope-controlled and endoscope-assisted microsurgical techniques applied through the minimally invasive supraorbital keyhole craniotomy to perform our dissections.
Results: We divided the intracisternal oculomotor nerve into three segments in this study. These are the interpeduncular segment, located in the interpeduncular fossa and surrounded by dens arachnoid trabeculae around the thalamoperforating arteries; the tentorial segment, located between the posterior cerebral and superior cerebellar arteries and the posterior petroclinoid fold and surrounded by the elements of the clival and tentorial arachnoid membrane groups; and the trigonal segment located on the surface of the oculomotor trigone between the posterior petroclinoid fold and the dural exit of the nerve into the cavernous sinus and surrounded by the posteriorly located membranes of the carotid membrane group.
Conclusions: Our findings support the more accurate understanding of the physiology of the arachnoid membrane system and the pathophysiology of space-occupying lesions in the region of the oculomotor nerve. Therefore, our results may support performing more atraumatic surgery in this area.
References
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The authors stated that there are no conflicts of interest regarding the publication of this article.
©2014 by De Gruyter
Articles in the same Issue
- Frontmatter
- Research Articles
- New strategy for firm ventricular wall tap
- Endoscopic anatomy of the intracisternal oculomotor nerve: a new segmentation based on the topography of the arachnoid membranes
- Revisiting intradural spinal cord stimulation: an introduction to a novel intradural spinal cord stimulation device
- Case Reports
- SOMI brace immobilization as a treatment option for inveterate hangman’s fracture in pediatric patients
- Complete resolution of large intracranial aneurysm and cranial nerve deficits after endovascular treatment in an infant with tuberous sclerosis
- Visual and sensorimotor cortices mapping during awake resection of lesion on the right periatrium: a case report on brainwaves and their peculiar patterns
- Calendar of Events
- Calendar of Events
- Acknowledgement to our Reviewers
- Acknowledgement to our Reviewers
Articles in the same Issue
- Frontmatter
- Research Articles
- New strategy for firm ventricular wall tap
- Endoscopic anatomy of the intracisternal oculomotor nerve: a new segmentation based on the topography of the arachnoid membranes
- Revisiting intradural spinal cord stimulation: an introduction to a novel intradural spinal cord stimulation device
- Case Reports
- SOMI brace immobilization as a treatment option for inveterate hangman’s fracture in pediatric patients
- Complete resolution of large intracranial aneurysm and cranial nerve deficits after endovascular treatment in an infant with tuberous sclerosis
- Visual and sensorimotor cortices mapping during awake resection of lesion on the right periatrium: a case report on brainwaves and their peculiar patterns
- Calendar of Events
- Calendar of Events
- Acknowledgement to our Reviewers
- Acknowledgement to our Reviewers