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The internal auditory meatus provides a passage through which the vestibulocochlear nerve (CN VIII), the facial nerve (CN VII), and the labyrinthine artery (an internal auditory branch of the anterior inferior cerebellar artery in 85% of people) can pass from inside the skull to structures of the inner ear and face.
Stapedectomy is a surgical procedure in which the stapes bone is removed from the middle ear and replaced with a prosthesis.. If the stapes footplate is fixed in position, rather than being normally mobile, the result is a conductive hearing loss.
The basic structure and function of the fish's inner ear is similar to that of other vertebrates. Mammals share homologous genes with zebrafish that are known to affect inner ear structure and function. [17] In zebrafish, spontaneous and damage-induced hair cell regeneration has been demonstrated in the inner ear.
Indications for use of an ossicular replacement prosthesis include: [1] Chronic middle ear disease; Otosclerosis; Congenital fixation of the stapes; Secondary surgical intervention to correct for a significant and persistent conductive hearing loss from prior otologic surgery; Surgically correctable injury to the middle ear from trauma
Proper function of the auditory system is required to able to sense, process, and understand sound from the surroundings. Difficulty in sensing, processing and understanding sound input has the potential to adversely impact an individual's ability to communicate, learn and effectively complete routine tasks on a daily basis.
A middle ear implant is a hearing device that is surgically implanted into the middle ear. They help people with conductive, sensorineural or mixed hearing loss to hear. [1] Middle ear implants work by improving the conduction of sound vibrations from the middle ear to the inner ear. There are two types of middle ear devices: active and passive.
The median price for a total hip or knee replacement without complications at top orthopedic hospitals was just over $68,000 in 2020, according to one analysis, though health plans often negotiate ...
The middle cranial fossa route is the only method that can be used to expose the entire I.A.C. and labyrinthine segment with preservation of hearing. This is combination with the retrolabyrinthine and transmastoid approaches, enables visualization of the entire course of the facial nerve and still preserves function of the inner ear.