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Finite element analysis of the transfer of sound in the myringosclerotic ear

Author

Listed:
  • Karla Berdich
  • Fernanda Gentil
  • Marco Parente
  • Carolina Garbe
  • Carla Santos
  • João Paço
  • R.M. Natal Jorge
  • Pedro Martins
  • Nicolae Faur

Abstract

This work presents a biomechanical study of myringosclerosis (MS), an abnormal condition of the ear that produces calcification of the lamina propria of the eardrum. The study researched the transfer of sound to the stapes depending on the localization, dimension and calcification degree of the MS plaques. Results were obtained using a validated finite element model of the ear. The mechanical properties of the lamina propria were modified, in order to model MS plaques, using the rule of mixtures for particle composites considering that the plaques are made of hydroxyapatite particles in a matrix of connective tissue. Results show that the localization and dimension of the plaques are a factor of higher importance than calcification for loss of hearing through MS. The mobility of the stapes decreased with the presence of larger plaques and also when the tympanic annulus and the area of the handle of the malleus were involved.

Suggested Citation

  • Karla Berdich & Fernanda Gentil & Marco Parente & Carolina Garbe & Carla Santos & João Paço & R.M. Natal Jorge & Pedro Martins & Nicolae Faur, 2016. "Finite element analysis of the transfer of sound in the myringosclerotic ear," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 19(3), pages 248-256, February.
    • Handle: RePEc:taf:gcmbxx:v:19:y:2016:i:3:p:248-256
    DOI: 10.1080/10255842.2015.1010526
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    1. Fernanda Gentil & Marco Parente & Pedro Martins & Carolina Garbe & João Paço & António Ferreira & João Manuel Tavares & Renato Jorge, 2013. "The influence of muscles activation on the dynamical behaviour of the tympano-ossicular system of the middle ear," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 16(4), pages 392-402.
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