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Updated: Sep 24, 2026
06:59
Intrathecal Application of a Fluorescent Dye for the Identification of Cerebrospinal Fluid Leaks in Cochlear Malformation
Published on: February 29, 2020
[Silicone foreign body in the middle ear caused by auditory canal impression in hearing aid fitting]
1Hals-Nasen-Ohrenarzt, Lünen-Brambauer.
HNO
|February 1, 1992
Abstract:
We report an 81-year-old man who suffered a rupture of the tympanic membrane during the taking of an impression for the fitting of a hearing aid. A large amount of impression material thus penetrated the middle ear. The symptoms and surgical treatment are reported. Criteria for the qualification of persons entrusted with the prescription and adaptation of hearing aids are presented to help to prevent similar incidents.
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01:11The Auditory Ossicles
The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
01:16Anatomy of the Ear
Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...