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Assessing Gait Stability before and after Cochlear Implantation.

Katarzyna Kaczmarczyk1, Michalina Błażkiewicz2, Ida Wiszomirska3

  • 1Department of Physiology, Faculty of Rehabilitation, Józef Piłsudski University of Physical Education in Warsaw, Poland.

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|February 9, 2019
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Summary

Cochlear implantation surgery improved gait stability in most patients, reducing fall risk. Key metrics like gait stability ratio and center of mass showed significant positive changes post-surgery.

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Area of Science:

  • Neuroscience
  • Biomechanics
  • Otolaryngology

Background:

  • Cochlear implantation can affect the inner ear and lead to vestibular disorders.
  • Understanding the impact on gait stability is crucial for patient care.

Purpose of the Study:

  • To investigate the influence of cochlear implantation on gait stability.
  • To assess changes in gait parameters before and after surgery.

Main Methods:

  • Gait testing using a motion capture system was performed on 21 subjects before and 3 months after cochlear implantation.
  • A control group of 30 healthy individuals was included for comparison.
  • Analysis focused on gait stability ratio (GSR) and center of mass (CoM) parameters.

Main Results:

  • Gait stability ratio (GSR) improved by an average of 6% in 17 subjects post-implantation.
  • Statistically significant improvements were observed in step time, walking speed during the single-support phase, and center of mass (CoM).
  • A new classification system based on CoM indicated a shift towards stronger and weaker stability intervals post-surgery.

Conclusions:

  • Cochlear implantation generally enhances gait stability, thereby lowering the risk of falls.
  • Significant improvements in GSR, CoM, and specific gait parameters confirm the positive effects.
  • A novel CoM-based classification system is proposed for gait rehabilitation planning and monitoring.