The cochlea in skull base surgery: An anatomy study

Jian Wang, Fumitaka Yoshioka, Wonil Joo, Noritaka Komune, Vicent Quilis-Quesada, Albert L. Rhoton

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

Objective The object of this study was to examine the relationships of the cochlea as a guide for avoiding both cochlear damage with loss of hearing in middle fossa approaches and injury to adjacent structures in approaches directed through the cochlea. methods Twenty adult cadaveric middle fossae were examined using magnifcations of ×3 to ×40. results The cochlea sits below the?oor of the middle fossa in the area between and below the labyrinthine segment of the facial nerve and greater petrosal nerve (GPN) and adjacent to the lateral genu of the petrous carotid. Approximately one-third of the cochlea extends below the medial edge of the labyrinthine segment of the facial nerve, geniculate ganglion, and proximal part of the GPN. The medial part of the basal and middle turns are the parts at greatest risk in drilling the?oor of the middle fossa to expose the nerves in middle fossa approaches to the internal acoustic meatus and in anterior petrosectomy approaches. Resection of the cochlea is used selectively in extending approaches through the mastoid toward the lateral edge of the clivus and front of the brainstem. coNclusioNs An understanding of the location and relationships of the cochlea will reduce the likelihood of cochlear damage with hearing loss in approaches directed through the middle fossa and reduce the incidence of injury to adjacent structures in approaches directed through the cochlea.

本文言語英語
ページ(範囲)1094-1104
ページ数11
ジャーナルJournal of Neurosurgery
125
5
DOI
出版ステータス出版済み - 11 2016
外部発表はい

All Science Journal Classification (ASJC) codes

  • Surgery
  • Clinical Neurology

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