Estudo anatômico da inervação da porção distal do membro torácico em eqüino

Abstract

Foram utilizados membros torácicos de 20 cavalos adultos de raça mestiça, provenientes do matadouro de equinos de Campo Belo - MG. Os nervos palmares medial e lateral, digitais palmares medial e lateral, e o ramo dorsal do nervo digital palmar (medial e lateral) foram dissecados para observação da freqüência de suas posições e ramificações acessórias. Os resultados demonstraram que o local de bifurcação do nervo palmar em ramo digital palmar e seu ramo dorsal, ocorreu com maior frequência na região proximal da articulação metacarpofalangeana tanto no membro torácico direito como no esquerdo e em ambas as faces medial e lateral. Foram constatados 5 tipos de padrões de divisão do nervo palmar, sendo o tipo 1 o predominante.

Digit innervation of the thoracic limb of Criollo horses: Anatomical description and consequences to perineural blocks

“…This site of origin was also the most frequent one in thoracic limbs of 20 cross-bred horses (Borges et al, 1997).…”

“…In horses of the present study, 90% of the cases showed that the dorsal branch originated proximally to the proximal sesamoid bones. This site of origin was also the most frequent one in thoracic limbs of 20 cross‐bred horses (Borges et al., 1997).…”

“…This classification took into account the ease of palpation of the proximal sesamoid bones and was adapted from the work of Borges et al. (1997).…”

“…After the isolation of the dorsal branch of the palmar digital nerve, the origin of this branch was classified as proximal, over or distal to the proximal sesamoid bones. This classification took into account the ease of palpation of the proximal sesamoid bones and was adapted from the work of Borges et al (1997).…”

“…Some studies cite anatomical variations in limb innervation as one of the factors that may interfere with the interpretation of perineural blocks (Baxter, 2011;Dyson, 1986;Schumacher et al, 2014). Although other studies confirmed the occurrence of these variations, there is no estimate of the number of animals that show them (Borges, Souza, & de Paula, 1997;Getty, 1986;Sack, 1975).…”