The study was to analyze the dynamic characteristics of ossicular chain under the stimulus frequencies, 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1 kHz, 2 kHz, 3 kHz, 4 kHz, 5 kHz, 6 kHz, 7 kHz and 8 kHz, by finite element method. The finite element model of the ossicular chain of patients could be built by 3D image model of the ossicular chain based on the high resolution computed tomography. The displacement at the footplate would hardly occur when the ossicles was excited by the sound stimuli at frequency above 2 kHz. The presented result shows that the ossicular chain only could transmit the stimuli under 2000 Hz by the vibration of ossicles.
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