Localization of ulnar neuropathy with conduction block across the elbow.
We performed short segment incremental stimulation on 13 consecutive patients with ulnar neuropathy across the elbow (UNE) and conduction block. Conduction block occurred proximal to the medial epicondyle in 62%, at the epicondyle in 23%, and below the elbow in 15%. The ulnar nerve may be more prone to external compression above the elbow than previously recognized. Short segment incremental studies are useful to identify conduction block above the elbow in such patients.
Herrmann
D N
DN
Department of Neurology, University of Rochester, SMH 601 Elmwood Avenue, Box 673, Rochester, New York 14642, USA. david_herrmann@urmc.rochester.edu
Preston
D C
DC
McIntosh
K A
KA
Logigian
E L
EL
D000200:Action Potentials / Q000502:physiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004550:Elbow / Q000294:innervation*; D004568:Electrodiagnosis / Q000379:methods*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction / Q000502:physiology*; D011446:Prospective Studies; D014459:Ulnar Nerve / Q000503:physiopathology; D020424:Ulnar Neuropathies / Q000175:diagnosis*