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Related Experiment Video

Updated: Jul 11, 2025

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

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Evaluating a cutting-edge augmented reality-supported navigation system for spinal instrumentation.

Maximilian Schwendner1,2, Sebastian Ille3,4, Maria Wostrack1

  • 1Department of Neurosurgery, Klinikum Rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany.

European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
|November 14, 2023
PubMed
Summary

A new augmented reality (AR) system for navigated pedicle screw placement in spinal surgery proved safe and accurate. This AR-supported navigation enhances dorsal instrumentation procedures, offering a reliable tool for surgeons.

Keywords:
Augmented realityDorsal instrumentationPedicle screwSpinal navigation

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Area of Science:

  • Neurosurgery
  • Orthopedic Surgery
  • Medical Technology

Background:

  • Dorsal instrumentation with pedicle screws is standard for spinal pathologies.
  • Intraoperative 3D imaging and navigation are established techniques.

Purpose of the Study:

  • Evaluate a novel augmented reality (AR)-supported navigation system for pedicle screw placement.
  • Assess the system's safety, efficacy, and accuracy in clinical application.

Main Methods:

  • A prospective study involving 20 patients undergoing dorsal instrumentation.
  • Utilized a new AR navigation system integrating cameras into the reference array and drill guide.
  • Evaluated accuracy via intraoperative CT imaging and analyzed patient safety and outcomes.

Main Results:

  • A median of 8 pedicle screws were placed per patient; 70% underwent percutaneous instrumentation.
  • The average pedicle screw placement duration was 56 ± 26 minutes.
  • A low revision rate of 1.7% (3/180 screws) was observed, with no major intraoperative complications.

Conclusions:

  • The AR-supported navigation system is a reliable and safe tool for navigated pedicle screw placement in clinical practice.
  • The system facilitates 3D imaging-based screw placement with a minimal intraoperative setup.
  • Integration of AR offers new opportunities for dorsal instrumentation procedures.