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Updated: Jun 17, 2026
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Pedicle Screw Placement Using an Augmented Reality Head-Mounted Display in a Porcine Model
Published on: May 24, 2024
CT-based patient-specific simulation software for pedicle screw insertion
Shawn Klein1, Cari M Whyne, Raphael Rush
1Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada.
Journal of Spinal Disorders & Techniques
|January 16, 2010
Summary
This study developed a 3D patient-specific simulator for pedicle screw insertion, offering visual and quantitative feedback to improve surgical preparation and reduce misplacement risks.
Area of Science:
- Spinal surgery simulation
- Medical device development
- Surgical training technology
Background:
- Pedicle screw insertion is challenging, especially with abnormal spinal morphology.
- Current preoperative planning relies on imaging, lacking quantitative post-insertion metrics.
- A need exists for improved surgical practice and outcome assessment.
Purpose of the Study:
- To develop a 3D patient-specific simulator for practicing pedicle screw insertion.
- To provide surgeons with visual and quantitative feedback during simulated procedures.
- To enhance surgical preparation and minimize pedicle screw misplacement risks.
Main Methods:
- A 3D patient-specific spine model was created from CT scans.
- The simulator was developed as a graphical plug-in using TCL scripting for AmiraDev 3.11.
- Simulation allows practice with various screw sizes and adjustable spine translucency.
Main Results:
- The simulator enables practice and analysis of pedicle screw insertion in 2D and 3D.
- Quantitative feedback includes anatomical measurements, screw purchase, and a grading system.
- Users can visualize screw trajectories and depths for better understanding.
Conclusions:
- The simulator is a valuable tool for complex cases and surgical trainees.
- An ongoing study evaluates its efficacy as a teaching tool.
- Future development aims for a stand-alone software platform.
