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Related Experiment Video

Updated: May 21, 2025

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Hybrid optical and electromagnetic navigation for mandibular angle osteotomy.

Hongbin Shen1, Cai Meng2, Tao Song3

  • 1Image Processing Center, School of Astronautics, Beihang University, 37 Xueyuan Road, Haidian District, 100191, Beijing, China.

Journal of Cranio-Maxillo-Facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery
|March 21, 2025
PubMed
Summary
This summary is machine-generated.

A new hybrid navigation system combines optical and electromagnetic tracking for enhanced accuracy in mandibular angle osteotomy (MAO). This system overcomes limitations of single-mode navigation, offering precise visual guidance for surgical procedures.

Keywords:
Electromagnetic navigationMandibular angle osteotomyOptical navigationSurgical navigation

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Area of Science:

  • Surgical Navigation
  • Biomedical Engineering
  • Medical Imaging

Background:

  • Current surgical navigation systems for mandibular angle osteotomy (MAO) face limitations.
  • Optical navigation is prone to occlusion, while electromagnetic (EM) navigation suffers from magnetic interference.
  • Simultaneous tracking of the mandible and surgical saw is challenging with single-mode systems.

Purpose of the Study:

  • To develop and validate a hybrid optical and EM navigation system (HOENS) for MAO.
  • To improve accuracy and safety in MAO by integrating complementary navigation technologies.
  • To address the limitations of single-mode navigation systems in complex surgical scenarios.

Main Methods:

  • Proposed a hybrid optical and EM navigation system (HOENS).
  • Utilized optical navigation for the surgical saw and EM navigation for the mandible.
  • Implemented a distance-based automatic hybrid navigation strategy.
  • Conducted experiments using mandible phantoms and evaluated accuracy under metallic interference.

Main Results:

  • HOENS achieved an average hybrid navigation accuracy below 2 mm under laboratory conditions with metallic interference.
  • Magnetic interference from the surgical saw on the EM sensor was evaluated, confirming the need for the hybrid approach.
  • Osteotomy experiments on mandible phantoms demonstrated normal operation and precise visual guidance with HOENS.
  • Average setup time for HOENS was less than 20 minutes.

Conclusions:

  • HOENS is a feasible and effective system for assisting surgeons in MAO.
  • The hybrid system meets clinical accuracy requirements for mandibular surgery.
  • HOENS shows significant potential for future clinical applications in MAO.