Martin-Gruber anastomosis with anomalous superficial radial innervation to ulnar dorsum of hand: a pitfall when common variants coexist.

@article{Leis2010MartinGruberAW,
  title={Martin-Gruber anastomosis with anomalous superficial radial innervation to ulnar dorsum of hand: a pitfall when common variants coexist.},
  author={Arturo A. Leis and Ivana Stetk{\'a}rov{\'a} and Keionna J. Wells},
  journal={Muscle & nerve},
  year={2010},
  volume={41 3},
  pages={313-7}
}
The Martin-Gruber anastomosis (MGA) is the most common anatomic variation in the upper extremity. Anomalous superficial radial innervation to the ulnar dorsum of the hand is the most common cause of an absent dorsal ulnar cutaneous (DUC) response. The coexistence of these variants introduces a relatively common yet underrecognized potential pitfall in nerve conduction studies (NCS). We performed confirmatory NCS in two cases referred for ulnar neuropathy in the forearm (case 1) and at the elbow… CONTINUE READING