Inaba A, Yokota T, Komori T, Hirose K
Department of Neurology, Tokyo Medical and Dental University, Japan.
Electroencephalogr Clin Neurophysiol. 1996 Apr;101(2):100-4. doi: 10.1016/0924-980x(95)00278-s.
Percutaneous high voltage electrical stimulation was applied to the proximal sciatic nerve at the hip in 18 normal subjects to evaluate motor conduction in the proximal sciatic nerve, and short-segment stimulation of the sciatic and posterior tibial nerves was given in 6 normal subjects. Compound muscle action potentials (CMAPs) were recorded from the abductor hallucis (AH) and extensor digitorum brevis (EDB) muscles. Supramaximal stimulation was easily obtained at the proximal sciatic nerve and all the sites in the short-segment stimulation. The motor nerve conduction velocity of the sciatic nerve between the hip and the popliteal fossa was 49.2 +/- 4.24 m/sec in the tibial division and 54.1 +/- 6.48 m/sec in the peroneal division. The respective peak-to-peak amplitude and negative-peak areas of the CMAPs at the hip were reduced to 86.8 +/- 5.65% and 97.3 +/- 5.36% for the tibial division, and 93.4 +/- 7.06% and 96.8 +/- 5.09% for the peroneal division as compared to the values for the popliteal fossa. The negative-peak duration of the CMAPs at the hip point were increased to 109.2 +/- 7.2% for the tibial nerve and 107.1 +/- 5.68% for the peroneal nerve as compared with the duration at the popliteal fossa. This method is non-invasive and useful for evaluating motor nerve conduction in the lower limb.
对18名正常受试者的髋部坐骨神经近端施加经皮高压电刺激，以评估坐骨神经近端的运动传导，并对6名正常受试者的坐骨神经和胫后神经进行短节段刺激。从拇展肌（AH）和趾短伸肌（EDB）记录复合肌肉动作电位（CMAP）。在坐骨神经近端和短节段刺激的所有部位都很容易获得超强刺激。坐骨神经在髋部和腘窝之间的运动神经传导速度，在胫神经分支为49.2±4.24米/秒，在腓总神经分支为54.1±6.48米/秒。与腘窝处的值相比，髋部CMAP的峰峰值幅度和负峰面积，在胫神经分支分别降至86.8±5.65%和97.3±5.36%，在腓总神经分支分别降至93.4±7.06%和96.8±5.09%。与腘窝处的持续时间相比，髋部CMAP的负峰持续时间在胫神经增加到109.2±7.2%，在腓总神经增加到107.1±5.68%。该方法是非侵入性的，对评估下肢运动神经传导有用。
