Conductive Hearing Loss Due to a Dehiscent Facial Nerve
Journal Title: Journal of Medical Science And clinical Research - Year 2017, Vol 5, Issue 1
Abstract
Objective- The relative position of the developing tympanic segment of facial nerve (fallopian canal) to that of the stapes and oval window niche may lead to Ossicular anomalies responsible for a conductive hearing loss. We hereby present five cases of unilateral conductive hearing loss due to a dehiscent tympanic segment of the facial nerve causing impingement and/or anomalous development of the stapes crura. Result-The stapes was found to be mobile in each of five patients suspected of having a conductive or mixed hearing loss due to otosclerosis. A dehiscent, inferiorly malpositioned, tympanic segment of facial nerve was found to be impinging on the stapes crura in all the cases and to be associated with malformed stapes crura in one of the case. No further middle ear surgery was performed in any of the cases.
Authors and Affiliations
Dr Hamjol Singh Chakkal
Keywords
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