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Related Experiment Video

Updated: Jul 5, 2026

Optimizing Minimally Invasive Spine Surgery: A Fully 3D CT O-Arm Navigated Workflow in MIS TLIF
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Optimizing Minimally Invasive Spine Surgery: A Fully 3D CT O-Arm Navigated Workflow in MIS TLIF

Published on: October 17, 2025

Navigated pedicle screw placement: experimental comparison between CT- and 3D fluoroscopy-based techniques.

Jens Geerling1, Thomas Gösling, Anna Gösling

  • 1Trauma Department, Hannover Medical School, Hannover, Germany.

Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery
|April 25, 2008
PubMed
Summary
This summary is machine-generated.

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This study compared CT-based and Iso-C-based navigation for pedicle screw accuracy. Iso-C-based navigation showed a tendency towards higher accuracy, though differences were not statistically significant.

Area of Science:

  • Spinal surgery
  • Medical imaging
  • Surgical navigation

Background:

  • Pedicle screw misplacement rates can be high (up to 10% with CT navigation).
  • Fluoroscopy-based 3D navigation shows lower misplacement rates (1.7-6%).

Purpose of the Study:

  • To compare the accuracy of CT-based and Iso-C-based navigation in an experimental setting.
  • Evaluate image-to-reality accuracy for spinal surgical navigation systems.

Main Methods:

  • Used a foam spine model and the SurgiGATE navigation system.
  • Measured point accuracy by comparing marker positions to navigation system data.
  • Assessed pedicle accuracy using pre-drilled holes and navigated pointer placement.

Main Results:

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Pedicle Screw Placement Using an Augmented Reality Head-Mounted Display in a Porcine Model
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Last Updated: Jul 5, 2026

Optimizing Minimally Invasive Spine Surgery: A Fully 3D CT O-Arm Navigated Workflow in MIS TLIF
08:34

Optimizing Minimally Invasive Spine Surgery: A Fully 3D CT O-Arm Navigated Workflow in MIS TLIF

Published on: October 17, 2025

Cone Beam Intraoperative Computed Tomography-based Image Guidance for Minimally Invasive Transforaminal Interbody Fusion
05:37

Cone Beam Intraoperative Computed Tomography-based Image Guidance for Minimally Invasive Transforaminal Interbody Fusion

Published on: August 6, 2019

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Pedicle Screw Placement Using an Augmented Reality Head-Mounted Display in a Porcine Model

Published on: May 24, 2024

  • Iso-C-based navigation showed lower mean deviation (0.5 mm vs. 1 mm for CT).
  • Higher accuracy for Iso-C3D navigation at the entrance point (76.6% vs. 43% for CT).
  • Iso-C3D navigation resulted in more awls hitting trajectories correctly (78.3% vs. 66.6% for CT).

Conclusions:

  • Iso-C-based navigation demonstrated a tendency towards higher accuracy in the experimental setup.
  • No statistically significant difference in overall image-to-reality accuracy was found between CT- and Iso-C-based navigation.