Using augmented reality to guide bone conduction device implantation.

Area of Science:

• Neurosurgery
• Medical Technology
• Surgical Navigation

Background:

• Precise placement of bone conduction implants is crucial to avoid vital anatomical structures.
• Current intraoperative guidance systems face adoption barriers due to accessibility and cognitive load.
• Need for improved surgical navigation in otologic procedures.

Purpose of the Study:

• To evaluate the efficacy of augmented reality (AR) guided surgery for bone conduction implantation.
• Assess AR's impact on surgical accuracy, duration, and ease of use.
• Compare AR-assisted placement with conventional techniques.

Main Methods:

• Five surgeons performed bone conduction implantations on cadaveric specimens.
• Procedures were conducted both with and without AR projection guidance.
• Pre- and postoperative CT scans analyzed for center-to-center (C-C) and angular accuracies; Wilcoxon signed-rank test used for comparison.

Main Results:

• AR-guided surgery significantly reduced operative time (4.3 ± 1.2 min vs. 6.6 ± 3.5 min, p=0.030).
• Center-to-center distances were significantly smaller with AR guidance (1.9 ± 1.6 mm vs. 9.0 ± 5.3 mm, p<0.001).
• Angular accuracy showed no significant difference between groups; projection accuracy averaged 1.7 ± 0.6 mm.

Conclusions:

• Augmented reality (AR) guided surgery enhances precision in bone conduction implant placement.
• AR significantly reduces operative time compared to conventional methods.
• AR provides direct intraoperative reference, improving surgical outcomes and accessibility.