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Published on: September 16, 2022
Odontoid screw placement using Isocentric 3-dimensional C-arm fluoroscopy.
Lori E Summers1, Joshua G Kouri, Mu Yang
1Department of Neurological Surgery, McKnight Brain Institute, University of Florida, Gainesville, FL 32610, USA.
Journal of Spinal Disorders & Techniques
|April 18, 2008
Summary
Isocentric 3-dimensional fluoroscopy simplifies odontoid screw placement for type II fractures. This technique ensures successful screw placement, reduces radiation exposure, and offers immediate verification of screw position.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Medical Imaging
Background:
- Odontoid screw fixation is a common treatment for type II odontoid fractures.
- Advancements like biplanar fluoroscopy and cannulated screw systems have improved screw placement.
- Isocentric C-arm fluoroscopy offers potential benefits for ease and accuracy.
Purpose of the Study:
- To evaluate the benefits of isocentric 3-dimensional fluoroscopy for odontoid screw placement.
- To demonstrate the efficacy of this technique in treating type II odontoid fractures.
Main Methods:
- Isocentric 3-dimensional fluoroscopy combined with image-guided navigation was used.
- Three-dimensional images were acquired intraoperatively and uploaded to a navigation workstation.
- Screw trajectory was planned and executed using tracked instruments in 9 patients.
Main Results:
- Successful odontoid screw placement was achieved in all 9 patients.
- Intraoperative computed tomography confirmed accurate screw positioning.
Conclusions:
- Isocentric 3-dimensional fluoroscopy with image guidance simplifies screw placement.
- This method reduces the need for biplanar fluoroscopy and decreases radiation exposure.
- It allows for immediate intraoperative verification of screw placement.
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