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

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Matthias E Sporer1,2, Marcos F Ghizoni3, Jayme A Bertelli2,4

  • 1Department of Plastic Surgery, Academic Teaching Hospital Feldkirch, Feldkirch, Austria.

The Journal of Hand Surgery, European Volume
|March 28, 2025
PubMed

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.

Keywords:
High median nerve injuryhigh ulnar nerve injurynerve communicationnerve repairopponens nerve transferpinch strength

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