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Preoperative planning and intraoperative navigation in skull base surgery
S Hassfeld1, J Zöller, F K Albert
1Department of Oral and Maxillofacial Surgery, Ruprecht-Karls University of Heidelberg, Germany. shassfeld@ukl.uni-heidelberg.de
Summary
3-D navigation systems like Viewing Wand and SPOCS offer accurate intraoperative guidance in skull base surgery. These computer-assisted tools enhance tumor extent identification and visualization of vital structures, improving surgical safety and outcomes.
Area of Science:
- Neurosurgery
- Medical Technology
Background:
- Commercially available 3-D navigation systems, Viewing Wand and SPOCS, were evaluated for skull base surgery.
- These systems aim to improve surgical precision and safety in complex anatomical regions.
Observation:
- The systems were tested in over 60 clinical trials, achieving an accuracy of ≤2.7 mm.
- No significant difference in intraoperative accuracy was found between mechanical and optical navigation systems.
- Both systems aided in identifying tumor extent and visualizing proximity to vital structures.
Findings:
- 3-D planning, simulation, and intraoperative navigation facilitate surgery in complex anatomies, minimizing risks to neighboring structures.
- The SPOCS system demonstrated superior flexibility and integration compared to the Viewing Wand.
- SPOCS' 'offset' function allows for virtual instrument elongation and 'look ahead' capabilities.
Implications:
- Computer-assisted simulation and navigation systems are expected to enhance surgical quality and reduce risks.
- These technologies may enable more extensive and radical surgical interventions in skull base procedures.