title: [Experimental microsurgery of the facial nerve: end-to-end suture versus approximated ends wrapped with masseter muscle aponeurosis].
abstract: As an alternative to end-to-end facial nerve microsurgery, we propose anastomosis of the sectioned nerve ends and wrapping with ipsilateral masseter fascia. This intervention was performed on the right facial nerve of 20 Wistar rats and compared with classical end-to-end anatomosis performed on the left nerve of the same rats. At the end of the experiment, histological studies were made of each nerve removed "en bloc" with the ipsilateral lip orbicular muscle. Five micra-thick sections were stained using conventional and immunohistochemical methods. We analyzed truncal integrity, fibroblast proliferation, demyelination, lymphocyte proliferation, granulomatous reaction, and muscle degeneration in both types of anastomosis. The differences between the two types of anastomosis were statistically non-significant, and both interventions produced similar functional results. Small differences between the techniques might condition the use of one or the other in selected cases.
authors.affiliation: Servicio de ORL, Hospital Clínico Universitario Lozano Blesa, Zaragoza.
authors.forename: A M
authors.initials: AM
authors.lastname: Urpegui
authors.forename: J M
authors.initials: JM
authors.lastname: Abenia
authors.forename: M J
authors.initials: MJ
authors.lastname: Morandeira
authors.forename: J I
authors.initials: JI
authors.lastname: Alfonso
authors.forename: L J
authors.initials: LJ
authors.lastname: Domínguez
authors.forename: J
authors.initials: J
authors.lastname: Martínez
authors.forename: E
authors.initials: E
authors.lastname: Sancho
authors.forename: J
authors.initials: J
authors.lastname: Millán
authors.forename: H
authors.initials: H
authors.lastname: Vallés
mesh_terms: D000714:Anastomosis, Surgical; D000818:Animals; D005154:Facial Nerve / Q000601:surgery*; D005260:Female; D008297:Male; D008406:Masseter Muscle / Q000601:surgery*; D008866:Microsurgery / Q000379:methods*; D051381:Rats; D017208:Rats, Wistar; D013536:Suture Techniques
vernacular_title: Microcirugía experimental del nervio facial: sutura término-terminal versus envoltura de los extremos aproximados con manguito de aponeurosis de músculo masetero.