Motor neuron presentation of an ulnar neuropathy and Riche-Cannieu anastomosis.
A Riche (7)-Cannieu (2) anastomosis (ulnar-to-median anastomosis in the hand) in the setting of an ulnar or median nerve lesion can produce confusing clinical and electrodiagnostic findings. We report a patient with a deep branch ulnar neuropathy complicated by a Riche-Cannieu anastomosis. His clinical presentation led to an initial diagnosis of motor neuron disease. Extensive electrophysiologic studies clarified the extent of the Riche-Cannieu anastomosis and the ulnar neuropathy.
Saperstein
D S
DS
Department of Neurology, Wilford Hall Medical Center, San Antonio, Texas, USA. sapers@pol.net
King
R B
RB
D000328:Adult; D003937:Diagnosis, Differential; D004576:Electromyography; D006225:Hand / Q000294:innervation*; D006801:Humans; D008297:Male; D008475:Median Nerve / Q000002:abnormalities* / Q000503:physiopathology; D016472:Motor Neuron Disease / Q000175:diagnosis / Q000503:physiopathology; D009046:Motor Neurons / Q000502:physiology*; D009431:Neural Conduction / Q000502:physiology; D014459:Ulnar Nerve / Q000002:abnormalities* / Q000503:physiopathology; D020424:Ulnar Neuropathies / Q000175:diagnosis* / Q000503:physiopathology