Microsurgical endoscopic-assisted retrosigmoid intradural suprameatal approach: Anatomical considerations

F. Acerbi, M. Broggi, S. M. Gaini, M. Tschabitscher

Research output: Contribution to journalArticle

Abstract

Aim. The aim of this study was to evaluate the feasibility of microscopic endoscopic assisted suprameatal tubercle drilling with a retrosigmoid approach and it focuses on the anatomic structures identified with the endoscope. The advantages of the 30° optic view are also described. Methods. Fifty dry temporal bones were studied in order to estimate the variability of the prominence of the suprameatal tubercle. Eight fresh cadaveric specimens were prepared for a retrosigmoid approach to allow for microscopic endoscopic assisted suprameatal tubercle drilling. The increase in trigeminal exposure and neurovascular structures visualization with the endoscope, using 0° and 30° optics were then evaluated. Results. Three major types of the suprameatal tubercle were found: 1) a large size tubercle (>6 mm, 9/50 cases); 2) a medium size tubercle (3-6 mm, 37/50 cases); and 3) an almost absent suprameatal tubercle (

Original languageEnglish
Pages (from-to)55-63
Number of pages9
JournalJournal of Neurosurgical Sciences
Volume54
Issue number2
Publication statusPublished - Jun 2010

Keywords

  • Endoscopy
  • Temporal bone

ASJC Scopus subject areas

  • Clinical Neurology
  • Surgery

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