To The Editor: We are surprised by the claim made in the article "Dysfunction of the Spinal Cord During Spinal Arthrodesis for Scoliosis: Recommendations for Early Detection and Treatment. A Case Report" (80-A: 1679-1683, Nov. 1998), by Potenza et al., who state that "this is the first case to be reported in the English-language literature in which changes in the somatosensory evoked potentials and in the function of the spinal cord were reversed when appropriate treatment was given at the optimum time." We refer to our article1, which was cited by Potenza et al. We described the case of a patient who had precisely the same condition (a scoliosis with syrinx treated by intstrumented arthrodesis). Abnormalities in somatosensory evoked potentials were observed when distraction was applied. In our study, the distraction that was applied correlated with the …