Assessment of the cartilage transplant thickness after removing of the tympanic membrane retraction pocket (finiteelement modelling)

  • Sergei M. Bosiakov Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Kirill S. Yurkevich Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Gennady I. Mikhasev Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Lyudmila G. Petrova Belarusian Medical Academy of Post-Graduate Education, 3 P. Broŭki Street, 3 building, Minsk 220013, Belarus
  • Marina M. Maisyuk Republican Scientific and Practical Centre of Otolaryngology, 8 Suhaja Street, Minsk 220004, Belarus

Abstract

The retraction pocket emergence of the tympanic membrane (eardrum) leads to the sound conduction disorder of the middle ear. Surgical removal of fixed retraction pockets leads to perforations. A cartilage grafts in the region of these perforations are installed. The aim of the study is to assess the geometric parameters of the cartilage graft, providing sound conductivity of the middle ear oscillatory system corresponding the auditory functions of the normal middle ear. The evaluation of the geometric parameters of the cartilage graft is carried out on the basis of the middle ear finite-element model. The eigenfrequencies are utilized as quantities characterizing the auditory conductivity of the middle ear oscillatory system. The thickness of the graft attached on the posterosuperior quadrant after removal of the fixed retraction pocket is 0.193 ± 0.031 mm. It is evaluated on basis of comparative analysis of the middle ear eigenfrequency spectra in normal conditions, the middle ear with attached cartilaginous grafts of different thicknesses. The obtained results can be used for planning of surgical operations to restore the integrity of the tympanic membrane and improve auditory conductivity.

Author Biographies

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

doctor of science (physics and mathematics), docent; dean of the faculty of mechanics and mathematics

Kirill S. Yurkevich, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; associate professor at the department of bio- and nanomechanics, faculty of mechanics and mathematics

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

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

Lyudmila G. Petrova, Belarusian Medical Academy of Post-Graduate Education, 3 P. Broŭki Street, 3 building, Minsk 220013, Belarus

doctor of science (medicine), full professor; head of the department of otolaryngology, faculty of surgery

Marina M. Maisyuk, Republican Scientific and Practical Centre of Otolaryngology, 8 Suhaja Street, Minsk 220004, Belarus

PhD (medicine); head of the department of otorhinolaryngology for children, in-patient hospital

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Published
2021-04-12
Keywords: middle ear, tympanic membrane, finite-element modelling, cartilage graft, eigenfrequency, auditory conductivity
Supporting Agencies This study is supported by a grant from the President of the Republic of Belarus in the field of science.
How to Cite
Bosiakov, S. M., Yurkevich, K. S., Mikhasev, G. I., Petrova, L. G., & Maisyuk, M. M. (2021). Assessment of the cartilage transplant thickness after removing of the tympanic membrane retraction pocket (finiteelement modelling). Journal of the Belarusian State University. Mathematics and Informatics, 1, 69-78. https://doi.org/10.33581/2520-6508-2021-1-69-78