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成仁暎,吳貞姬 고려대학교 의과대학 1988 고려대 의대 잡지 Vol.25 No.1
Conduction across the brachial and lumbosacral plexus has been evaluated extensively with Indirect method of measuring the F-waves and H-reflexs. A method for measuring directly across the plexus is desirable. Then, MacLean, utilizing the techniques developed for cervical nerve root stimulation, provided a standardized method for evaluating the lumbar and sacral plexuses individually. In this study, motor nerve conduction studies across the sacral plexus were obtained by stimulation of the L5 S1 spinal nerve roots and the stimulation of the sciatic nerve at gluteal fold according to MacLean's technique. Total 80 sacral plexuses in 40 healthy Korean adults aged from 20 to 55 years were examined. The peroneal and tibial division of each sacral plexus was studied. The results were summarized as follows: 1. The mean value of the conduction velocity of the peroneal division was 63.51±7.93 M/sec by the tape measure, 56±7.06M/sec by the caliper measure. The mean value of the latency was 20.32±1.64 msec in proximal and 16.56±1.34msec in distal. The conduction time was 3.76±0.48 msec and the mean value of the amplitude was 9.51± 3.58 mV in proximal and 12.44 ± 4.32 mV in distal. 2. The mean value of the conduction velocity of the tibial divisions was 63.18 ± 7.94 M/sec by the tape measure, 56.16±7.34 M/sec by the caliper measure. The mean value of the latency was 20.27±1.64msec in proximal and 16.55 ± 1.34 msec in distal. The conduction time was 3.77±0.54 msec and the mean value of the amplitude was 12.98±4.34 mV in proximal and 16.73± 5.65 mV in distal. 3. There was no significant difference in conduction velocity, latency and conduction time between peroneal and tibial division. 4. The amplitude was significantly larger in tibial division than in peroneal division. 5. There were no significant differences in conduction velocity, latency, conduction time and amplitude related to the age, sex, and the side of extremities. 6. There was statistically significant correlation between the conduction time and the conduction distance measured by the caliper, but not correlative to the conduction distance measured by the tape. 7. There was no statistically significant correlation between the height of the examinee and the conduction distance or conduction time.