Endoscopically-assisted transmastoid approach to the geniculate ganglion and labyrinthine facial nerve

Nicholas Jufas*, Manohar Bance

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)
    5 Downloads (Pure)

    Abstract

    Background: Endoscopic transcanal approaches to the facial nerve allow excellent exposure of the tympanic facial nerve. This approach becomes limited when access is required to the more proximal geniculate ganglion and labyrinthine portion of the facial nerve. The aim of this report was to determine the feasibility of a transmastoid endoscopically assisted approach to the geniculate ganglion and labyrinthine facial nerve. This is an endoscopic cadaveric dissection and video review at a university anatomical laboratory. Methods: A total of 12 endoscopic cadaveric dissections were performed. A cortical mastoidectomy and perilabyrinthine air cell removal was performed using an operating microscope. Beyond this, dissection was performed with an endoscope. Results: In all dissections, an endoscopically assisted transmastoid approach allowed complete access to the geniculate ganglion, and at least 1.5 mm of the distal labyrinthine facial nerve. Further transcrusal drilling through the anterior crus of the superior semicircular canal allowed access to the entire labyrinthine facial nerve. Conclusions: The entire geniculate ganglion and labyrinthine facial nerve is difficult to access with microscopic techniques. Adding endoscopic visualization allows for complete visualization of the geniculate ganglion. Clinical reports will further strengthen these preliminary cadaveric results.

    Original languageEnglish
    Article number53
    Pages (from-to)1-5
    Number of pages5
    JournalJournal of Otolaryngology - Head and Neck Surgery
    Volume46
    Issue number1
    DOIs
    Publication statusPublished - 22 Aug 2017

    Bibliographical note

    Copyright the Author(s) 2017. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

    Keywords

    • surgical procedure
    • endoscopic
    • geniculate ganglion
    • decompression
    • surgical
    • facial nerve
    • semicircular canals

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