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Related Experiment Video

Updated: Jun 29, 2025

Three-Dimensional Reconstruction of Orbital Fractures
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Three-Dimensional Reconstruction of Orbital Fractures

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Image-guided orbital surgery: a preclinical validation study using a high-resolution physical model.

Rizwana I Khan1,2, Kealan McElhinney3, Andrew Dickson4

  • 1Royal Victoria Eye and Ear Hospital, Dublin, Ireland rizwana@mac.com.

BMJ Open Ophthalmology
|April 4, 2024
PubMed
Summary
This summary is machine-generated.

Electromagnetic image-guided systems (EM-IGS) show feasibility and accuracy in preclinical orbital surgery simulations. This technology, tested on 3D-printed skulls, paves the way for clinical trials.

Keywords:
Orbit

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Area of Science:

  • Ophthalmology
  • Surgical Navigation
  • Medical Device Technology

Background:

  • Orbital surgery presents unique challenges due to complex anatomy.
  • Image-guided systems can potentially enhance surgical precision and safety.
  • Electromagnetic image-guided systems (EM-IGS) offer a promising approach for real-time navigation.

Purpose of the Study:

  • To evaluate the feasibility and accuracy of EM-IGS in a preclinical setting for orbital surgery.
  • To assess the system's performance using high-fidelity, patient-specific 3D-printed orbital models.
  • To gather surgeon feedback on the usability and potential challenges of EM-IGS.

Main Methods:

  • EM-IGS platform (StealthStation S8, Medtronic) tested in a simulated operating theatre.
  • Five patient-specific 3D-printed skulls used as high-fidelity orbital simulators.
  • Surgeons assessed system registration and navigational accuracy against anatomical landmarks.

Main Results:

  • Submillimeter navigational accuracy achieved across most landmarks.
  • More experienced surgeons demonstrated improved registration accuracy and fewer attempts.
  • Surgeons found the technology acceptable, noting potential interference from mobile phones.

Conclusions:

  • EM-IGS is feasible and accurate for orbital surgery in a preclinical validation study.
  • Patient-specific 3D-printed models are effective simulators for testing surgical navigation technologies.
  • This study supports further clinical investigation into the safety and efficacy of EM-IGS in orbital procedures.