The surgical anatomy for multiple-electrode extracochlear implant operations

Direct access to the whole length of the cochlear turns via endaural middle ear approach for the placement of extracochlear electrodes is severely restricted. Approximately 10 mm. of the cochlear turns are accessible, being less than a third of their length. The middle cranial fossa, the facial nerv...

Full description

Saved in:
Bibliographic Details
Published in:Journal of laryngology and otology 1988-08, Vol.102 (8), p.685-688
Main Authors: Franz, Burkhard K-H. G., Clark, Graeme M.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Cochlea - surgery
Cochlear Implants
Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology
Electrodes
Humans
Main Articles
Medical sciences
Methods
Non tumoral diseases
Otorhinolaryngology. Stomatology
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Direct access to the whole length of the cochlear turns via endaural middle ear approach for the placement of extracochlear electrodes is severely restricted. Approximately 10 mm. of the cochlear turns are accessible, being less than a third of their length. The middle cranial fossa, the facial nerve, the internal carotid artery and the temporomandibular joint restrict the access. A further restriction is caused by the position of the cochlea and the direction of its axis. The anterior part of the cochlea lies anterior to the tympanic membrane and medial to the temporomandibular joint, thus limiting an endaural approach to a posterolateral direction. Despite this limitation small sections of the basal, middle and apical turns of the cochlea can be reached.
ISSN:0022-2151
1748-5460
DOI:10.1017/S0022215100106152