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A study on the effect of ligament and tendon detachment on human middle ear sound transfer using mathematic model
- Source :
- Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine. 233(8)
- Publication Year :
- 2019
-
Abstract
- The objective of this study is to investigate the effects of ligament and tendon detachment on human middle ear sound transfer. For this purpose, a geometric human middle ear model was reconstructed based on the computed tomography scanning data of the temporal bones from healthy adult volunteers. For the ear model, pars tensa was assumed to be fit for a 5-parameter Maxwell model and inverse method was used to obtain the necessary coefficients. Furthermore, frequency response method was implemented to investigate the vibration behaviors of tympanic membrane umbo and stapes footplate under an acoustic stimulus of 90 dB within 0.2â8 kHz. Meanwhile, nine patterns of fractured ligaments and tendons, whose effects on the middle ear sound transfer function were simulated by setting free the nodes of the ligaments and tendons of interest. The results indicate that the displacement of tympanic membrane umbo and stapes footplate as well as the velocity transfer function lies within the bounds of the published experimental data. The detachments of ligaments or tendons except for lateral mallear ligament may incur both gains as much as 15 dB and losses of â8 dB in the velocity of stapes footplate at low frequencies ( f⤠1 kHz), while no significant changes were observed at high frequencies ( f > 1 kHz). However, detachment of the ligaments or tendons induces tiny changes in the displacement of stapes footplate at the frequencies of 0.2â8 kHz.
- Subjects :
- Male
Frequency response
Materials science
Tympanic Membrane
Umbo
Finite Element Analysis
Ear, Middle
Models, Biological
Vibration
Tendons
03 medical and health sciences
Young Adult
0302 clinical medicine
otorhinolaryngologic diseases
medicine
Humans
030223 otorhinolaryngology
Stapes
Ligaments
Mechanical Engineering
Magnetoencephalography
General Medicine
Anatomy
musculoskeletal system
Footplate
Tendon
medicine.anatomical_structure
Sound
Ligament
Middle ear
sense organs
Tomography, X-Ray Computed
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 20413033
- Volume :
- 233
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine
- Accession number :
- edsair.doi.dedup.....013ae313e2b9a7d08ebdab183bacc8da