O1-6-12. Cauda equina conduction time as a test for lumber spinal stenosis

We examined the cauda equina conduction time (CECT) in 20 patients (11 male), average age, 73years, low back pain therapy criterion score of Japan orthopaedic Association (JOA score), 17 points, and Oswestry Disability Index (ODI), 19 points and aged matched 17 healthy volunteers. Magnetic Augmented Translumbosacral Stimulation (MTATS) at L1 and S1 levels elicited a compound muscle action potential (CMAP) recordable from bilateral abductor hallucis muscle. We calculated the CECT as the difference between the latencies of CAMPs elicited by stimulation at L1 and S1 level.

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