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Markerless Augmented Reality Guidance System for Maxillofacial Surgery: An Omnidirectional Tracking Method.

Ewald Ury¹, Wouter De Vos^2,3,4, Viktor Vörös¹

¹Department of Mechanical Engineering KU Leuven Leuven Belgium.

Health Science Reports

|March 23, 2026

Summary

This summary is machine-generated.

This study presents a markerless augmented reality (AR) guidance system for maxillofacial surgery. The novel system offers a precise, less invasive, and cost-effective alternative to traditional cutting guides.

Keywords:

Microsoft HoloLens 2 augmented reality automatic registration markerless tracking maxillofacial surgery surgical navigation

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Area of Science:

Surgical Navigation
Augmented Reality in Medicine
Maxillofacial Surgery

Background:

Challenges persist in accurately translating planned osteotomies to the operating room.
Current cutting guides in maxillofacial surgery are expensive, time-consuming, and invasive.

Purpose of the Study:

To introduce a novel markerless augmented reality (AR) guidance system.
To replace traditional physical cutting guides with digital holographic guides.

Main Methods:

Utilized Microsoft HoloLens 2 for markerless, real-time mandible tracking and automatic alignment.
The system demonstrated reliable detection from any angle, even with obstructions.
Accuracy was evaluated by measuring hologram registration errors against an electromagnetic sensor gold standard in an in-vitro study with eight surgeons.

Main Results:

The AR guidance system achieved an average registration error below 1.40 mm.
A precision of 1.15 mm was recorded when compared to the clinical gold standard.

Conclusions:

The AR system presents a promising alternative to conventional cutting guides in maxillofacial surgery.
This technology enhances surgical precision and efficiency while being less invasive and cost-effective.