Abstract
The middle ear plays an important role in auditory mechanics, transmitting sound signals efficiently from the ear canal to the cochlea. If ligaments, which support ossicles, become fixed, conductive hearing loss occurs. A diagnosis of these fixations of the ligaments is difficult. Especially, as the anterior malleal ligament (AML) is a tiny ligament, its fixation is often overlooked. In this study, the effect of the AML fixation on the middle-ear vibration was analyzed by using a finite-element model of the middle ear and by measuring vibrations of temporal bones with a laser Doppler interferometer. Then, based on our findings, a diagnostic method for detecting the AML fixation was suggested.
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