主要观察指标：观察面部表情肌功能恢复的时间，检测面神经传导速度的动态变化。
MAIN OUTCOME MEASURES: the rehabilitation time of facial expression muscle function was observed and the dynamic changes of conduction velocity of facial nerve were assayed.
主要观察指标：观察面部表情肌功能恢复的时间，检测面神经传导速度的动态变化。
MAIN OUTCOME MEASURES: the rehabilitation time of facial expression muscle function was observed and the dynamic changes of conduction velocity of facial nerve were assayed.
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