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Vol. 19. Issue 2.
Pages 218-232 (January 2008)
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Vol. 19. Issue 2.
Pages 218-232 (January 2008)
El nervio auriculotemporal. Bases neuroanatómicas del Síndrome de Frey
Auriculo temporal nerve. Neuroanatomic bases of the Frey' Syndrome
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G. Decuadro-Sáenz
, G. Castro, N. Sorrenti, I. Doassans, S. Deleon, F. Salle, A. Saibene, A. Santamaría, V.R. Soria-Vargas
Departamento de Anatomía. Facultad de Medicina. Universidad de la República. Montevideo. Uruguay
A. Pérez-Brignani*
* Clínica de Dolor Facial. Departamento de Fisiatría Dr. Fernando Acle. Hospital Policial. Ministerio del Interior. Montevideo. Uruguay
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Resumen

El propósito de este estudio fue precisar las relaciones del nervio auriculotemporal en las regiones infratemporal y parotídea. Se realizó la microdisección de 32 regiones infratemporales y parotídeas de cadáveres humanos formolados. Los patrones de origen fueron:, raíz única: 15.4%, dos raíces: 73.1% y tres raíces: 11.5%. En todos los casos la raíz lateral era la de mayor diámetro (2–2,5mm). En los casos con dos raíces estas constituían un ojal nervioso a la arteria meníngea media en el 89.4% de los casos. La raíz medial se originaba en todos los casos del borde posterior del segmento inicial del nervio alveolar inferior. La distancia media entre la raíz lateral del nervio auriculotemporal y la cápsula de la articulación temporomandibular fue de 1.5mm, con patrón asimétrico, derecha: 2mm (rango: 0–7mm; DE 1.90mm); izquierda: 1.25mmmm (rango: 0-3 mm; DE 0.88mm). En 10 casos (31.3%) la raíz lateral se encontraba en contacto directo con la cápsula articular, izquierda (46.1%) y a derecha (21.1%). La distancia media en la cara posterior de la articulación temporomandibular, desde la cara superior del disco articular al tronco del nervio auriculotemporal fue de 10,5mm (DE: 4.06mm), con patrón asimétrico, derecha: 9mm (rango: 5,0–18,0mm; DE 3,70mm), izquierda: 11.0mm (rango: 3.0–20.0mm; DE 4.41mm). Se discute el rol de estos hallazgos en la etiología del síndrome de Frey.

Palabras clave:
Nervus auriculo temporalis
Articulatio temporomandibularis
Glandula parotis
Síndrome de Frey
Síndrome auriculotemporal
Abreviaturas:
AMI
Amm
Ata
ATM
ATS
CM
DA
FI-MPL
FS-MPL
Mm pterygoidei
Go
GP
MPL
NAI
NAT
NB
NL
NM
NPm
NTPa
NTPm
NTPp
RextNAT
RimNAT
RintNAT
SF
V2
V3
VII
VMI
Summary

The aim of this study was to precise the relationships of the auriculotemporal nerve in the infratemporal and parotid regions. We realized micro-dissections of thirty–two infratemporal and parotid regions of human cadaver's formol-fixed. The pattern of origin was: one root: 15.4%, two roots: 73.1%, three roots: 11.5%. In all cases, the lateral root present the major diameter (2–2,5mm). In those cases with two roots, these formed a neural loop round the middle meningeal artery in the 89.4% of the cases. The origin of the medial root was the posterior border of the inferior alveolar nerve. The median distance between the lateral root and the temporomandibular joint capsule was 1.5mm, with asymmetric pattern: right: 2mm (rank: 0–7mm; ED: 1.90mm); left: 1.25mm (rank: 0–3mm; ED: 0.88mm). In 10 cases (31.3%) the lateral root was in direct contact with the articular capsule, with asymmetric pattern: left: 46.1%; right: 21%. The median distance between the superior aspect of the articular disk and the trunk of the auriculotemporal nerve in the posterior aspect of the temporomandibular joint was 10,5mm (ED: 4.06mm), with asymmetric pattern: right: 9mm (rank: 5–18.0mm; ED: 3.70mm); left: 11.0mm (rank: 3.0–20mm; ED: 4.41mm). We discussed the rol of this findings in the etiology of the Frey's syndrome.

Key words:
Auriculotemporal nerve
Temporomandibular joint
Parotid gland
Frey's syndrome
Gustatory flushing

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