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Author Spotlight: Advancements in Impedance Monitoring for Cochlear Implant Surgery
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Force Perception Thresholds in Cochlear Implantation Surgery.

Louis B Kratchman1, Daniel Schuster, Mary S Dietrich

  • 1Vanderbilt University and Vanderbilt University Medical Center, Nashville, Tenn., USA.

Audiology & Neuro-Otology
|September 1, 2016
PubMed
Summary

Surgeons can sense some forces during cochlear implantation (CI) surgery. This study found otologic surgeons can perceive forces, suggesting they may detect severe trauma during electrode insertion.

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Area of Science:

  • Neurosurgery
  • Surgical Technology
  • Biomedical Engineering

Background:

  • Cochlear implantation (CI) surgery can cause tissue trauma.
  • The relationship between intracochlear trauma, insertion forces, and surgeon perception is not well understood.

Purpose of the Study:

  • To investigate the force perception thresholds of otologic surgeons during simulated CI surgery.
  • To understand the link between insertion forces and potential tissue trauma.

Main Methods:

  • A benchtop apparatus simulated CI surgery, applying controlled forces to surgeons' hands.
  • Psychophysical testing was used to determine force perception thresholds in 10 otologic surgeons.

Main Results:

  • The median force perception threshold for otologic surgeons was found to be 20.4 mN.
  • Surgeons demonstrated the ability to perceive certain insertion forces.

Conclusions:

  • Otologic surgeons possess the capability to sense some forces encountered during cochlear implantation.
  • This sensory feedback suggests surgeons may perceive severe trauma, such as when the electrode crosses scalae.