Resumen

CAMPERO, Álvaro et al. Estudio anatómico de los pares xii yvii extracraneanos en la anastomosis hipogloso-facial. Rev. argent. neurocir. [online]. 2006, vol.20, n.2, pp.55-60. ISSN 1850-1532.

Objective: to analize the microsurgical anatomy of the extracranialhypoglossal and facial nerves in relationship with hypoglosso- facialanastomosis.Method: in five cadaveric heads, formolized and silicone coloured, weperformed with magnification three techniques of hypoglosso-facial anastomosis(classic, Sawamura and nerve grafting) and we measured the extracranialportions of the hypoglossal and facial nerves used in their anastomosis andtransposition and, its cutaneous proyection.Results: the average distances obtained were: from the facial nervebifurcation to the horizontal portion of the hypoglossal nerve 31.56 mm, facialnerve mastoidal portion 16.35 mm, from the facial nerve extracranial portion toits bifurcation 18.93 mm and from the skin 21.16 mm. The 100 % of the facialnerves prebifurcation extracranial portions studied were under anauditory-mastoid quadrilateral space located 2 cm beneath the external auditorycanal.Conclusion: the cutaneous proyection of the facial nerve prebifurcationextracranial portion was constant but the other measures obtained showedvariations.

Palabras clave : Facial nerve; Hypoglossal nerve; Hypoglosso-facialanastomosis.

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