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Acta Neurochir (2011) 153:23652375 DOI 10.1007/s00701-011-1168-1
EXPERIMENTAL RESEARCH
Cranial nerve vascular compression syndromesof the trigeminal, facial and vago-glossopharyngeal nerves: comparative anatomical study of the central myelin portion and transitional zone; correlations with incidencesof corresponding hyperactive dysfunctional syndromes
Bulent Guclu & Marc Sindou & David Meyronet &
Nathalie Streichenberger & Emile Simon &
Patrick Mertens
Received: 29 July 2011 /Accepted: 12 September 2011 /Published online: 27 September 2011 # Springer-Verlag 2011
AbstractObjective The aim of this study was to evaluate the anatomy of the central myelin portion and the central myelin-peripheral myelin transitional zone of the trigeminal, facial, glossopharyngeal and vagus nerves from fresh cadavers. The aim was also to investigate the relationship between the length and volume of the central myelin portion of these nerves with the incidences of the corresponding cranial dysfunctional syndromes caused by their compression to provide some more insights for a better understanding of mechanisms.
B. Guclu : M. Sindou : E. Simon : P. Mertens Department of Neurosurgery, Hopital Neurologique Pierre Wertheimer, University of Lyon 1,Lyon, France
D. Meyronet : N. StreichenbergerHospices Civils de Lyon, Centre de Pathologie et de Neuropathologie Est,Lyon 69003, France
D. Meyronet : N. StreichenbergerInserm U1028, CNRS UMR 5292, Neuroscience Center, University Lyon 1,Lyon 6900, France
E. Simon : P. MertensDepartment of Anatomy, University of Lyon 1, Lyon, France
B. Guclu (*)
Department of Neurosurgery, Sevket Yilmaz Hospital, Yildirim/Bursa, Turkeye-mail: [email protected]
Methods The trigeminal, facial, glossopharyngeal and vagus nerves from six fresh cadavers were examined. The length of these nerves from the brainstem to the foramen that they exit were measured. Longitudinal sections were stained and photographed to make measurements. The diameters of the nerves where they exit/enter from/to brainstem, the diameters where the transitional zone begins, the distances to the most distal part of transitional zone from brainstem and depths of the transitional zones were measured. Most importantly, the volume of the central myelin portion of the nerves was calculated. Correlation between length and volume of the central myelin portion of these nerves and the incidences of the corresponding hyperactive dysfunctional syndromes as reported in the literature were studied.
Results The distance of the most distal part of the transitional zone from the brainstem was 4.190.81 mm for the trigeminal nerve, 2.861.19 mm for the...