Steinberg, David R., MD, Richard H. Gelberman, MD, Bjorn Rydevik, MD, and Goran Lundborg
"The usefulness and accuracy of a portable instrument, the electroneurometer, for measuring distal motor latencies was determined in a prospective study of 28 patients (51 hands) with carpal tunnel syndrome and 10 controls (18 hands). There was a close correlation of distal motor latencies from the electroneurometer with those from formal electrodiagnostic testing. The average distal motor latency of controls was 3.3 +- 0.4 msec, compared with a mean value of 5.2 +- 1.8 msec in symptomatic hands. The sensitivity of the electroneurometer test alone was 69% (9 false-negatives); when combined with quantitative sensibility testing, sensitivity increased to 84%. Specificity of the electroneurometer test alone was 100% (no false positives). The portable electroneurometer is a convenient, painless, inexpensive device for screening patients with carpal tunnel syndrome..."
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