Clinical irrelevance of the Martin-Gruber communication: a study in proximal ulnar and median nerve lesions.

Sporer, Matthias E; Ghizoni, Marcos F; Bertelli, Jayme A · J Hand Surg Eur Vol · 2025

case_series · Level IV

Where this comes from

Abstract

The Martin-Gruber communication is a median-to-ulnar motor fibre exchange. However, no clinical evidence of its potential compensatory function was found in 54 patients with complete proximal lesions of either the ulnar or median nerves, suggesting that its significance is largely anecdotal.

Medical subject headings

Anatomy