Exposing the fundus of the Internal Acoustic Meatus without entering the labyrinth using a retrosigmoid approach. Is it possible?

Highlights A neuronavigation assisted retrosigmoid approach to the fundus of the IAM is described. The anatomy of the inner ear structures embedded in the petrous bone is shown. The mean residual bone on the fundus was 0.97 mm. The average length of the IAM accessible was 88.95%. The presented techn...

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Veröffentlicht in:	World neurosurgery 2016-07, Vol.91, p.357-364
Hauptverfasser:	Scerrati, Alba, M.D, Lee, Jung-Shun, M.D., M.Sc, Zhang, Jun, Ph.D, Ammirati, Mario, M.D., M.B.A
Format:	Artikel
Sprache:	eng
Schlagworte:	Acoustic neuroma Cadaver Craniotomy - methods Dissection Ear, Inner - anatomy & histology Ear, Inner - diagnostic imaging Ear, Inner - surgery Feasibility Studies Fundus Humans Inner ear Internal acoustic meatus Neuronavigation Neuronavigation - methods Neurosurgery Organ Sparing Treatments - methods Retrosigmoid approach Semicircular canals Tomography, X-Ray Computed
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Zusammenfassung:	Highlights A neuronavigation assisted retrosigmoid approach to the fundus of the IAM is described. The anatomy of the inner ear structures embedded in the petrous bone is shown. The mean residual bone on the fundus was 0.97 mm. The average length of the IAM accessible was 88.95%. The presented technique could facilitate the opening of IAM preserving the labyrinth.
ISSN:	1878-8750 1878-8769
DOI:	10.1016/j.wneu.2016.03.093