ABERRANT ABDUCTOR DIGITI MINIMI MUSCLE FOUND DURING OPEN SURGICAL DECOMPRESSION OF THE CARPAL TUNNEL: CASE REPORT. Músculo abductor digiti minimi aberrante hallado durante una cirugía abierta descompresiva del tunel carpiano: reporte de caso
DOI:
https://doi.org/10.31051/1852.8023.v5.n2.14063Keywords:
Aberrant abductor digiti minimi muscle, Guyon canal, carpal tunnel decompression, Abductor digiti minimi aberrante, canal de Guyon, descompresión del túnel carpianoAbstract
En este artículo reportamos un caso interesante de músculo hipotenar aberrante encontrado durante una descompresión del túnel carpiano. La variante muscular surgía de la fascia antebraquial voloradial, y pasaba sobre la arteria y el nervio ulnar en el canal de Guyón, y se insertaba en la cara ulnar hipotenar. La tensión en el vientre muscular produjo ligera abducción de la quinta articulación metacarpofa-lángica, lo que confirmó que el músculo era abductor digiti minimi aberrante. Observamos asimismo las diferentes variaciones de este músculo y ponemos énfasis en su potencial implicancia clínica.
Herein, we present an interesting case of an aberrant hypothenar muscle found during carpal tunnel decompression. The variant muscle arised from the voloradial antebrachial fascia and coursed over the ulnar artery and nerve in the Guyon canal, and inserted into the ulnar aspect of the hypothenar. Tension on the muscle belly provided slight abduction of the fifth metacarpophalangeal joint, which confirmed it to be an aberrant abductor digiti minimi muscle. We also discuss different variations of this muscle and emphasize its potential clinical implications.
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