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Feasibility of Using Inertial Measurement Units (IMUs) to Augment Cadaveric Temporal Training.

Troy Wesson¹, Satyajit Ambike², Radha Patel¹

¹Indiana University School of Medicine, Indianapolis, Indiana, USA.

The Laryngoscope

|November 14, 2024

Summary

Inertial measurement units (IMUs) can track cochlear implant electrode insertion speed, aiding surgical training. This technology offers a feasible method to monitor and potentially improve surgical techniques for better patient outcomes.

Keywords:

cochlear implant inertial measurement unit resident training

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Area of Science:

Otolaryngology
Biomedical Engineering
Surgical Training Technology

Background:

Cochlear implant electrode insertion speed correlates with surgical force and intracochlear structure preservation.
Optimizing insertion speed is crucial for improving outcomes in cochlear implant surgery.

Purpose of the Study:

To investigate the feasibility of using inertial sensors for kinematic analysis of electrode array insertion.
To augment otolaryngology-head and neck surgery training by monitoring insertion speed.

Main Methods:

Practicing surgeons used inertial measurement units (IMUs) with accelerometers to measure hand speed during electrode array insertion into cadaveric cochleas.
A mixed regression model analyzed speed differences across trials within surgeons.

Main Results:

Nine trials were conducted by three surgeons, with the highest mean speed at 8.4 ± 1.7 mm/s and the peak speed at 22.5 mm/s.
No significant difference in mean insertion speed was observed across trials within individual surgeons (p > 0.05).

Conclusions:

Inertial measurement units (IMUs) are cost-effective and user-friendly sensors for analyzing variables relevant to otolaryngology resident training.
IMUs can provide valuable insights into hand speed during cochlear electrode insertion, enabling targeted resident training.
Future randomized-controlled trials are needed to confirm if IMUs can facilitate lower insertion speeds.