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Microscope-based augmented reality assistance in keyhole retrosigmoid approach for microvascular decompression: a
Daniel Kiss-Bodolay1, Dorian Chauvet2, Caroline Le Guerinel2
1Hôpital Fondation Adolphe de Rothschild, Division of Neurosurgery, Paris, France; Faculty of Medicine, University of Geneva, Geneva, Switzerland.
Neuro-Chirurgie
|March 27, 2026
Summary
Microscope-based augmented reality (MAR) guidance enhances microsurgical precision for microvascular decompression (MVD) via the keyhole retrosigmoid approach. This technology improves surgical confidence and accuracy in treating trigeminal neuralgia.
Area of Science:
- Neurosurgery
- Medical Technology
Background:
- The keyhole retrosigmoid approach for microvascular decompression (MVD) requires high microsurgical precision.
- Evaluating microscope-based augmented reality (MAR) guidance to enhance safety and accuracy in this approach.
Purpose of the Study:
- To assess the feasibility and utility of MAR guidance in MVD procedures.
- To determine if MAR improves surgical confidence and precision.
Main Methods:
- Three patients with trigeminal neuralgia and neurovascular conflict underwent MVD.
- Anatomical segmentation was performed using Brainlab Elements software.
- Intraoperative MAR navigation was integrated with a Zeiss Kinevo 900 microscope.
Main Results:
- MAR guidance improved surgical confidence and precision during craniotomy and retractor placement.
- The MAR system was reliable and easy to use intraoperatively.
Conclusions:
- MAR-assisted MVD via keyhole retrosigmoid approach is feasible and straightforward.
- MAR provides valuable intraoperative guidance, potentially enhancing safety and confidence for trigeminal neuralgia treatment.
