Thoracodorsal nerve conduction study.
There is no nerve conduction study for the thoracodorsal nerve in the literature. A conduction study for this nerve is described. Thirty healthy adults (16 males) with a mean age of 41.5 +/- 10.6 (range, 22-63) years were studied. The thoracodorsal nerve was stimulated at axilla and Erb's point with recording over the latissimus dorsi. The latency was 1.9 +/- 0.4 (range, 1.2-2.7) ms and 3.6 +/- 0.4 (range, 2.8-4.5) ms for the axillary and Erb's stimulations, respectively. The amplitude of the compound muscle action potential was 4.1 +/- 1.8 mv on the right and 3.9 +/- 1.4 mv on the left. The compound muscle action potential ratio was 0.8 +/- 0.12 (range, 0.55-0.99). This study may be useful to evaluate the integrity of the thoracodorsal nerve and to assist in the diagnosis and prognosis of brachial plexus injury.
Department of Functional Restoration, Stanford University Medical Center, California 94305, USA.
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PB
Wu
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Robinson
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Kingery
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D000200:Action Potentials / Q000502:physiology; D000328:Adult; D001415:Back / Q000294:innervation*; D001917:Brachial Plexus / Q000502:physiology*; D020968:Brachial Plexus Neuritis / Q000175:diagnosis; D004558:Electric Stimulation / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology; D009431:Neural Conduction / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values; D013909:Thorax / Q000294:innervation*