磁刺激腰骶部神经根的兴奋点及其在腰骶神经根病中的应用

The magnetic stimulation exciting site of the lumbosacral root and its clinical application in lumbosacral radiculopathy

中文关键词:  磁刺激,运动诱发电位,腰骶神经根病

英文关键词:Magnetic stimulation Motor evoked potentials Lumbosacral radiculopathy

中文摘要:

  采用磁刺激腰骶部的神经根运动诱发电位（MEPs）和磁刺激窝F波相结合的方法测定运动神经根传导时间（MRCT）。随机抽查50名正常受试者，在胫前肌（TA）和比目鱼肌（SOL）记录出可靠的运动神经传导时间（MNCT）和MRCT，并根据MRCT推算磁刺激腰骶部神经根的兴奋点位置，结合5例尸解测出的L5和S1神经根的长度，确定该兴奋点在椎间孔的近端。同样方法记录和观察40例手术证实单侧L5或S1神经根受压患者MNCT和MRCT的改变。结果显示：病人组与正常组相比MNCT无显著性差异，而MRCT有显著性差异，异常率为85％。作者认为，无痛无创的磁刺激MEPs对腰骶神经根病有很大的诊断价值。

英文摘要:

  Motor root conduction time (MRCT) by the magnetic stimulation in lumbosacral region with F wave elicited by same method used in poplitea1 fossa was calculated. Motor nerve conduction time (MNCT) and MRCT were accurately recorded from the tibialis and sole