Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 42 5 2004 10 15 359 362 A. A. Momen J. Melendrez 2015 09 28 Several previous studies of adults have reported that the amplitudes of the sural and superficial radial nerve (SN and SRN) action potentials are larger with antidromic than with Orthodromic recordings. However, this difference has not been documented in children. This study evaluated the amplitudes of SN and SRN sensory nerve action potentials (SNAPs), obtained with antidromic and orthodromic recordings in children with and without neuropathy, and compared these data with similar findings in adults. The SNAPs of SN or SRN or both of 10 neurologically normal children, 6 children with neuropathy and 7 healthy adults were studied with surface stimulation and recording. The position of the stimulating and recording electrodes for the orthodromic recordings were the reverse of that for the antidromic recordings. Peak to peak SNAP amplitudes were measured and analyzed. The mean of the SRN SNAP amplitude was significantly higher with the antidromic than the Orthodromic technique for the first and third groups (P https://acta.tums.ac.ir/index.php/acta/article/view/2751 https://acta.tums.ac.ir/index.php/acta/article/download/2751/2733