Effects of fixation of stapes footplate on the middle ear transfer function using a finite element ear model

VernacularTitle:镫骨环韧带固定对中耳传声的影响——有限元模型研究
Author: Shubin CHEN ; Jie WANG
Keywords: Middle Ear; Finite Element Analysis; Mechanics; Stapes; Otosclerosis
From: Chinese Archives of Otolaryngology-Head and Neck Surgery 2017;24(8):399-401
CountryChina
Language:Chinese
Abstract: OBJECTIVE To study the effect of stapes footplate fixation of on the middle ear transfer function. METHODS A finite element model of stapes footplate fixation was developed by changing the Young's module after constructing a normal adult finite element ear model, which was developed based on a normal temporal bone scanning data using Micro-CT. The displacement at the umbo of tympanic membrane and at the center of the stapes footplate were calculated under certain sound pressure. RESULTS In case of stapes footplate fixation, compared with the normal data, the displacement at the center of stapes footplate was reduced significantly (-47 dB), but which was mild at the umbo of tympanic membrane. CONCLUSION The stapes footplate fixation ear model in this study showed an obvious displacement reduction of the stapes footplate. Further study using fresh temporal bone is necessary.