[The measurement of sensory conduction in the median nerve and its diagnostic value in the carpal canal syndrome (author's transl)].

The authors studied the rate of sensory conduction of the median nerve in three groups of subjects: a group including subjects of different ages in order to determine the variations in conduction and the evoked response as a function of age; a group of patients with the carpal canal syndrome; a group treated by median nerve infiltration in the carpal canal. It was confirmed that there is a slowing of the rate of sensory conduction and spreading of the evoked response in the elderly subjects. The electromyographic data in the carpal canal syndrome is defined, as well as the difficulty of diagnosis which sometimes necessitates specific measurement of the conduction rate between the carpal canal limits.