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本研究目的在于通过取得趾长伸肌M波波幅的正常值,及其左右侧的差别,以评价神经损伤的程度及预后。 方法 对26例健康受试者(男14女12人,19～45岁,平均30岁)的趾长伸肌进行腓神经的运动传导研究。记录电极与参考电极均用TECA6030型圆盘表面电极,地极用6008型。记录电极置于外踝前方到腓骨头连线的下2/3处,参考电极置于外踝,地极则放于刺激阴极与记录电极之间。使用常规腓神经传导刺激技术,以超过最大刺激的25％刺激腓骨头处,仪器采用Nicolet VikingⅡ型机,时间窗口10ms/格,灵敏度2mv/格,带通20～10000Hz。双下肢皮温差别控制在0.6℃以内。M波波幅测量从等电位线到负向偏转峰顶。M波波幅的左右差值百分
The aim of this study was to evaluate the extent and prognosis of nerve injury by obtaining the normal amplitude of M-wave of extensor digitorum longius and its left and right sides. Methods Twenty-six healthy subjects (14 males, 12 females, 19-45 years old, average 30 years old) were involved in motor conduction studies of the peroneal nerve. Both the recording electrode and the reference electrode use the TECA6030 disc surface electrode, and the ground electrode is 6008 type. The recording electrode was placed in front of the lateral malleolus to the lower 2/3 of the fibula head, the reference electrode was placed on the lateral malleolus, and the ground electrode was placed between the stimulation cathode and the recording electrode. The fibula head was stimulated at 25% of maximal stimulation using a conventional peroneal nerve conduction stimulator technique using a Nicolet Viking II machine with a time window of 10 ms / cell with a sensitivity of 2 mv / cell and a bandpass of 20 to 10,000 Hz. Skin temperature difference between the lower extremity control within 0.6 ℃. M-wave amplitude measurement from the equipotential line to the negative deflection peak. M-wave amplitude difference between the left and right