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Intradural endoscope-assisted anterior clinoidectomy: a cadaveric study
Nishanta B Baidya1, Chi-Tun Tang, Mario Ammirati
1Department of Neurological Surgery, Ohio State University Medical Center, Columbus, OH, USA.
Clinical Neurology and Neurosurgery
|June 9, 2012
Summary
This study demonstrates an endoscopic technique for anterior clinoid process (ACP) removal, ensuring continuous visualization of the internal carotid artery (ICA) to minimize injury risks during surgery.
Area of Science:
- Neurosurgery
- Surgical Anatomy
- Minimally Invasive Techniques
Background:
- The anterior clinoid process (ACP) is anatomically close to the internal carotid artery (ICA).
- Treating lesions near the ACP is challenging due to its deep location.
- ACP removal can improve access but risks ICA injury.
Purpose of the Study:
- To present an endoscopic-assisted technique for intradural ACP removal.
- To achieve continuous visualization of the clinoidal ICA during ACP removal via a pterional approach.
Main Methods:
- Performed 16 bilateral pterional dissections on cadaveric heads.
- Utilized a two-stage approach: extradural drilling followed by intradural endoscopic removal.
- Employed 2.7 mm, 0° and 30° endoscopes for visualization.
Main Results:
- Successfully removed the ACP in all specimens with continuous ICA visualization.
- Achieved excellent exposure of the clinoidal ICA and optic nerve with minimal brain retraction.
- Facilitated unhindered exposure of the parasellar region through ICA mobilization.
Conclusions:
- Endoscopic-assisted ACP removal with continuous ICA visualization is feasible.
- This technique may reduce the risk of inadvertent ICA injury.
- Further clinical studies are needed to validate these findings.