Auditory brainstem implantation: anatomy and approaches

Neurosurgery
Noritaka KomuneA L Rhoton

Abstract

Auditory brainstem implantation at the cochlear nuclei used mainly for neurofibromatosis type 2 patients with bilateral loss of the cochlear nerves has more recently been extended to the inferior colliculus. To examine the microsurgical and endoscopic anatomy of the cochlear nuclei and inferior colliculus as seen through the translabyrinthine and retrosigmoid approaches used for cochlear nuclei and inferior collicular implantation. Ten cerebellopontine angles of formalin-fixed adult cadaveric heads were examined with the aid of the surgical microscope and endoscope. The ascending auditory pathways between the cochlear nuclei and inferior colliculi and above were examined by the fiber dissection technique. Both the translabyrinthine and retrosigmoid routes provide sufficient exposure for concurrent tumor removal and implantation at either the cochlear nuclei or inferior colliculus. The position of the inferior colliculus in the auditory pathways and its accessibility in the infratentorial supracerebellar exposure directed through either the translabyrinthine or retrosigmoid approach makes it an alternative site for electrode placement if the cochlear nuclei are not functionally or structurally suitable for implantation. Endoscop...Continue Reading

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Citations

Dec 18, 2015·Neurosurgery·Steffen K Rosahl, Sybille Rosahl
Oct 8, 2016·Journal of Neurosurgery·Satoshi MatsuoAlbert L Rhoton
Sep 8, 2017·Neurosurgical Review·Toshio MatsushimaShigeaki Kobayashi
Jun 28, 2018·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Shyam Sundar KrishnanMohan Kameswaran
Dec 29, 2020·Frontiers in Systems Neuroscience·Tanuja Bordia, Natalie M Zahr

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