A microanatomical map of the structures hidden in the middle fossa based on the facial nerve hiatus: measurements and their variability

Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists
Asem SalmaM Ammirati

Abstract

The aim of this study was to investigate the relationships/variations between the facial nerve hiatus (FNH) and middle cranial fossa neuro-vascular structures. Twenty CT-scanned middle cranial fossae of fresh adult cadavers were used; the greater superficial petrosal nerves, and critical neuro-vascular structures were identified. Using the FNH as a reference point, a neuronavigation system was used to measure the distance between each structure and the FNH. The coefficient of variation (CV) was used to quantify the degree of variation among each distance. The mean distances and standard deviations between the various landmarks and the FNH, and the associated CV were analyzed. Furthermore, a microanatomical map of the structures hidden in the middle fossa based on the greater superficial petrosal nerve was generated. The most reliable relationships of the FNH were with the internal auditory canal (CV = 14.59), and with the vertical portion of the intrapetrous internal carotid artery (CV = 15.54). Our data demonstrate that the FNH can be used as anatomical landmark to plot the position of several hidden neurovascular structures when performing a middle-fossa skull base approach. However, the pattern and the variation of these str...Continue Reading

References

Dec 1, 1985·Journal of Neurosurgery·T KawaseT Mine
Jun 1, 1993·Journal of Neuroscience Methods·A W Toga, P K Banerjee
Mar 16, 2005·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·R Shane TubbsW Jerry Oakes
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Aug 5, 2008·Neurosurgical Review·Niklaus KrayenbühlOssama Al-Mefty

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Citations

Jul 18, 2014·Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India·Bong Jin ChoiBeom Cho Jun
Jun 3, 2015·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·R Shane TubbsAaron A Cohen-Gadol
Apr 14, 2016·Acta neurochirurgica·Marcos Alexandre da Franca PereiraRubens de Brito
Mar 17, 2016·The Journal of Craniofacial Surgery·Xingdong WangZhengcun Yan

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