Free oscillations of the middle ear after total tympanoplasty and ossiculoplasty with functional mobility of the foot plate of stapes

  • Sergei M. Bosiakov Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Gennadi I. Mikhasev Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
DOI: https://doi.org/10.33581/2520-6508-2019-1-46-57

Abstract

Pathological changes in the oscillating system of the middle ear can lead to a decrease of the susceptibility threshold of the auditory analyser to sound vibrations and, consequently, to partial or complete hearing loss. Cartilage implants are most often used for the reconstruction of the tympanic membrane, since they help to avoid complications after treatment. Evaluation of the dynamic characteristics (eigenmodes and eigenfrequencies) of the reconstructed middle ear is the most important problem for analysing the quality of operations that improve the auditory conductivity and develop further recommendations for optimal prosthetics. The aim of this study is to estimate the eigenfrequencies of the middle ear free oscillations after prosthetics on the basis of a mathematical model involving transverse vibrations of the cartilage graft and movement of the prosthesis connecting the reconstructed tympanic membrane and the base of the foot stapes plate. The values of natural frequencies are evaluated for different positions of the nodal lines, averaged geometrical parameters and elastic properties of the tympanic membrane, as well as the foot plate of stapes and prosthesis.

Author Biographies

Sergei M. Bosiakov, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; associate professor at the department of theoretical and applied mechanics, faculty of mechanics and mathematics

Gennadi I. Mikhasev, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

doctor of science (physics and mathematics), full professor; head of the department of biomechanics and nanomechanics, faculty of mechanics and mathematics

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Published
2019-04-08
Keywords: middle ear, reconstruction, tympanoplasty, TORP prosthesis, free oscillations, natural frequency
Supporting Agencies The study was supported by the State Program of Scientific Research «Convergence» (instruction 1.8.01.1).
How to Cite
Bosiakov, S. M., & Mikhasev, G. I. (2019). Free oscillations of the middle ear after total tympanoplasty and ossiculoplasty with functional mobility of the foot plate of stapes. Journal of the Belarusian State University. Mathematics and Informatics, 1, 46-57. https://doi.org/10.33581/2520-6508-2019-1-46-57
Issue
No 1 (2019): Journal of the Belarusian State University. Mathematics and Informatics
Section
Theoretical and Applied Mechanics

Copyright (c) 2019 Journal of the Belarusian State University. Mathematics and Informatics

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