Ulnarly deviated motor branch of the median nerve: prevalence during supraretinacular endoscopic carpal tunnel release.

Houghton, Eleanor R; Ecker, Jeff · J Hand Surg Eur Vol · 2025

retrospective_cohort · Level III

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Abstract

A review of 2248 supraretinacular endoscopic carpal tunnel release cases demonstrated an ulnarly deviated median nerve motor branch within aberrant muscles in 1.07% of cases. Vulnerable to iatrogenic damage, this variant is easier to see and dissect using the supraretinacular endoscopic technique.

Anatomy