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A new approach to computer-aided spine surgery: fluoroscopy-based surgical navigation
L P Nolte1, M A Slomczykowski, U Berlemann
1M.E. Müller Institute for Biomechanics, University of Bern, Switzerland. nolte@mem.unibe.ch
Summary
A novel navigation system for spinal surgery uses fluoroscopy and free-hand principles, automating image registration for enhanced accuracy and safety in surgical procedures.
Area of Science:
- Neurosurgery
- Medical Imaging
- Computer-Aided Surgery
Background:
- Existing computed tomography (CT)-based spinal navigation systems require complex vertebra-based registration.
- Intraoperative imaging and navigation are crucial for improving surgical outcomes.
Purpose of the Study:
- To develop and validate a new computer-based navigation system for spinal surgery.
- To enhance surgical accuracy and safety through advanced imaging and navigation techniques.
Main Methods:
- Combined intraoperative fluoroscopy (C-arm) with free-hand surgical navigation principles.
- Developed modules for automated digital X-ray image registration, avoiding CT-based procedures.
- Utilized real-time image-interactive navigation with single or multiple registered X-ray images for pseudo 3D control.
Main Results:
- The system demonstrated automated digital X-ray image registration, contrasting with CT-based methods.
- Real-time navigation of surgical tools was achieved using single or multiple registered fluoroscopic images.
- Laboratory validation and an early clinical trial with eight patients were successfully completed.
Conclusions:
- The new fluoroscopy-based navigation system offers a promising alternative for spinal surgery.
- The technique shows potential for improved accuracy and safety in both open and percutaneous spinal procedures.