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The aim of this study was to assess the course of the superficial branch of the radial nerve (SBRN) at the level of the wrist and its branches in relation to wrist arthroscopy portals.

Dissections were performed on 11 hands from 6 cadavers in the section starting from the point where the SBRN begins to emerge and ending at the terminal branches of the dorsal hand. The distribution of the SBRN, the distance from the superficial branch to the dorsal portals used in wrist arthroscopy, and the distance from the superficial branch to the anatomic determinants (styloid process of the radius, Lister tubercle) were studied.

At the level of the wrist, the nerve bifurcated into 2 branches in 8 of 11 wrists (73%) and into 3 branches in 3 of 11 wrists (27%). The mean distance from the SBRN where it was first detected proximal to the Lister tubercle was 73 mm. The mean distance between the styloids …