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Transcavernous Approach to the Basilar Apex: A Cadaveric Prosection.
Jonathan N Sellin1, Visish M Srinivasan1, Jovany C Navarro2
1Department of Neurosurgery, Baylor College of Medicine.
Cureus
|April 24, 2018
Summary
The transcavernous approach offers excellent surgical angles to the basilar artery but is technically demanding. This cadaveric study details each step, emphasizing how they enhance surgical view and exposure for complex neurosurgery.
Area of Science:
- Neurosurgery
- Anatomical Studies
- Surgical Technique
Background:
- The transcavernous approach, pioneered by Dolenc, is a key technique for accessing the basilar artery.
- While effective, this approach presents significant technical challenges requiring meticulous execution.
Purpose of the Study:
- To analyze the cadaveric transcavernous approach to the basilar artery.
- To evaluate the contribution of each surgical step to improving operative visualization and exposure.
Main Methods:
- Cadaveric prosection focusing on the transcavernous approach.
- Detailed examination of extradural (orbitozygomatic osteotomy, lesser sphenoid wing drilling, anterior clinoidectomy) and intradural (Sylvian fissure splitting, nerve unroofing, posterior clinoidectomy) stages.
- Microscopic imaging and illustrative case examples.
Main Results:
- Each step of the transcavernous approach was systematically dissected and visualized.
- Component steps were shown to progressively enhance surgical view and exposure.
- The value of adjuncts like orbitozygomatic osteotomy was highlighted.
Conclusions:
- The transcavernous approach is a valuable neurosurgical technique for basilar artery region pathologies.
- Understanding and executing each step meticulously is crucial for optimizing surgical outcomes.
- This detailed analysis provides a guide for mastering the transcavernous exposure.
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