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Related Experiment Video

Updated: Dec 15, 2025

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Augmented reality guided osteotomy in hallux Valgus correction.

Arnd Fredrik Viehöfer1, Stephan Hermann Wirth2,3, Stefan Michael Zimmermann2

  • 1Department of Orthopaedics, Balgrist University Hospital, Forchstrasse 340, 8008, Zürich, Switzerland. arnd.viehoefer@balgrist.ch.

BMC Musculoskeletal Disorders
|July 8, 2020
PubMed
Summary

Augmented reality (AR) improved osteotomy accuracy in hallux valgus surgery, especially for less experienced surgeons. This technique shows potential for enhancing surgical outcomes and reducing complications like transfer-metatarsalgia.

Keywords:
Augmented realityFirst ray shorteningHallux valgusTransfermetatarsalgia

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Area of Science:

  • Orthopedic Surgery
  • Surgical Technology
  • Medical Imaging

Background:

  • Hallux valgus surgery requires precise osteotomy angles to prevent first metatarsal shortening and subsequent transfer-metatarsalgia.
  • Augmented reality (AR) is a developing technology with potential applications in improving surgical precision.

Purpose of the Study:

  • To evaluate the effectiveness of AR in improving the accuracy of distal osteotomies during hallux valgus surgery.
  • To compare the accuracy of AR-guided osteotomies versus freehand osteotomies performed by surgeons with varying experience levels.

Main Methods:

  • Ex-vivo study using foot models with distal first metatarsal osteotomies.
  • Two surgeons (experienced and inexperienced) performed osteotomies with and without AR guidance.
  • AR provided a holographic overlay of the desired osteotomy angle, perpendicular to the second metatarsal.
  • Deviation in the transverse plane was measured to assess accuracy.

Main Results:

  • AR-guided osteotomies showed a tendency towards greater accuracy (4.9° ± 4.2°) compared to freehand cuts (6.7° ± 6.1°).
  • The inexperienced surgeon demonstrated significantly improved accuracy with AR (6.4° ± 3.5°) compared to freehand (10.5° ± 5.5°).
  • No significant difference in accuracy was observed for the experienced surgeon between AR-guided and freehand osteotomies (around 3°).

Conclusions:

  • Augmented reality shows promise in enhancing the accuracy of osteotomies during hallux valgus correction.
  • AR guidance appears particularly beneficial for improving the precision of less experienced surgeons.
  • This pilot study suggests AR as a valuable tool for optimizing surgical outcomes in hallux valgus procedures.