The Froment–Rauber nerve: A case report and review


  • Disclosure: The authors thank Eleni H. Aldridge and Thomas R. Piers for their artwork. The views expressed in this article are those of the authors and do not necessary reflect the official policy or position of the Department of the Army, Department of the Navy, Department of Defense, nor the U.S. Government.

Correspondence to: J.H. Kamerath, 3615 Holiday Drive SE, Olympia, WA 98501; e-mail:



The Froment–Rauber nerve is a rarely described anomalous nerve arising from 1 of the terminal branches of the radial nerve that provides innervation to intrinsic hand muscles. We describe a 26-year-old man who had a traumatic radial nerve injury that resulted in first dorsal interosseous muscle wasting. He presented to our clinic 2.5 years post-injury, after having had unnecessarily undergone surgical exploration of the ulnar nerve.


The patient's history, clinical examination, and multiple electrodiagnostic tests were reviewed.


All findings were consistent with a diagnosis of anomalous innervation via a Froment–Rauber nerve.


Understanding this rare phenomenon may aid in diagnosing confusing clinical cases and prevent unnecessary procedures. Muscle Nerve 47: 768–771, 2013