[Minimal-intensity carpal tunnel syndrome. Diagnostic sensitivity of various electrophysiological tests].

The most sensitive tests for the electrophysiological diagnosis of the carpal tunnel syndrome (CTS) were studied in asymptomatic hands contralateral to those objectively involved. The presence of dromic potential of "double peak" by stimulation of fingers 1 and 4, with detection of equidistant points of Median and Radial and Median and Cubital respectively, in the wrist, was the test demonstrating the earliest and most constant alterations. The detection of alterations with a frequency of subclinical character is of interest in the quantitative evaluation of CTS and in the recognition of the wide spectrum of the intensity of involvement of this compression syndrome.