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Facial nerve and stapes anomaly: A case report
Author(s) -
Mcclerkin William W.,
Schuknecht Harold F.
Publication year - 1974
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1288/00005537-197407000-00015
Subject(s) - oval window , footplate , stapes , anatomy , incus , stapedectomy , medicine , round window , vestibule , utricle , facial nerve , conductive hearing loss , dehiscence , otosclerosis , middle ear , inner ear , vestibular system , surgery , audiology , mechanical engineering , engineering
A 17‐year‐old white female presented with a unilateral conductive hearing loss which had been present since birth. The external auditory canal and tympanic membrane appeared to be normal, and the manubrium was mobile. Exploratory tympanotomy revealed the horizontal segment of the facial nerve to be dehiscent and displaced inferiorly, thus occupying the oval window niche. The nerve was interposed between a rudimentary crural arch and a fixed stapes footplate. The malleus and incus were normal. A burr hole was made into the vestibule at the superior edge of the oval window; however the utricular macula was encountered, and further attempts at reconstruction were discarded. Other procedures, such as rerouting the facial nerve in association with stapedectomy or fenestration of the lateral semicircular canal, were considered to be inappropriate for this case of unilateral deafness.