Osseous spiral lamina

Restoration: Nanotechnology in Tissue Replacement and Prosthetics

Published in Harry F. Tibbals, Medical Nanotechnology and Nanomedicine, 2017

The cochlea is a hollow tapering helix supported by a bony spiral shelf, the osseous spiral lamina, which winds around a central core, the modiolus. The cochlea’s spiral cone geometry, like a French horn or conch shell, acts as a mechanical acoustical transform to select for different vibration frequencies along its interior. The interior of the cochlea is separated into two fluid-filled chambers (the scala vestibuli and scala tympani or upper and lower ducts) by a thin sac, called the cochlear duct, filled with gelatinous material. The large end of the spiral is sealed from the outer ear by two membranes, the oval and round windows, on either side of the cochlear duct. The duct separates the two chambers all the way up the spiral to its apex, where there is a small opening between them. The sensory hair cells are inside the cochlear duct adjacent to a thin layer of tissue (the tectorial membrane). Each hair cell has a group of stereo-cilia projecting into the viscous gelatin, which resonate with sound [286,287].

Study of fatigue damage to the cochlea

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Journal Information

Published in Computer Methods in Biomechanics and Biomedical Engineering, 2023

Lei Gao, Jiakun Wang, Junyi Liang, Wenjuan Yao, Lei Zhou, Xinsheng Huang

Previous studies have shown that the displacement of bony structures contributes very little to the total deformation of the BM, so the osseous spiral lamina and the bony shell that encase the cochlea were not considered in this article. The cochlear model developed in this article consists mainly of the BM, perilymph fluid, and the scala vestibular and scala tympanic that are connected at the apex of the cochlea.

Osseous spiral lamina

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Restoration: Nanotechnology in Tissue Replacement and Prosthetics

Study of fatigue damage to the cochlea