This Article  • References  • Full text PDF  • Reply to article  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Citing articles on Web of Science (9)  • Contact me when this article is cited  Related Content  • Similar articles in this journal  Social Bookmarking   What's this?

Alison Reichard Peterson, MD; Michael J. Giuliani, MD; Megan McHugh, REDT; Carol Christy Shipe, REDT

Arch Neurol. 1992;49(8):870-873.

Abstract
• Sensory potentials recorded from the dorsal cutaneous branch of the ulnar nerve (DCUN) help localize ulnar nerve lesions. This conduction technique was first described by Jabre in 1980. Abnormalities detected with this technique in control populations are commonly attributed to local trauma. Anatomic variations of cutaneous innervation to the dorsum of the hand, however, have been described. We recorded DCUN responses using both the normal DCUN stimulation point and a secondary site of stimulation at the radial aspect of the forearm in 44 patients. Eleven patients demonstrated a low-amplitude DCUN response. Four of the 11 patients demonstrated sensory potentials obtained from the routine recording site of the DCUN with radial stimulation. We conclude that an abnormal DCUN response may represent anomalous innervation. To avoid some errors in localization, radial forearm stimulation should be performed whenever the DCUN response is abnormal.

Author Affiliations
From the Department of Neurology, University of Pittsburgh (Pa).

Footnotes
Accepted for publication February 10, 1992.

Reprint requests to the Department of Neurology, University of Pittsburgh, 325 Scaife Hall, Pittsburgh, PA 15261 (Dr Giuliani).

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?