作者介绍经乳突探查迷路段面神经的方法是:耳后切口,做Palva肌瓣,不分离耳道后壁软组织,在乳突凿开后循二腹肌嵴暴露茎乳孔,自此向上暴露面神经直至锥上隐窝。经此窗进入中耳,分离砧镫关节和砧槌关节,并将砧骨体向下翻入中耳,但要保留砧骨窝及砧骨短突的韧带。沿水平段面神经管追至匙突,将上和外半规管的壶腹刻划出来并磨至露出蓝线;然后向内向前追踪在槌骨头内方找到膝状神经节,此处恰在中颅窝硬脑膜下方,面神经在此突呈锐角折向后向水平半规管壶腹端深处行进,自此即为面神经的迷路段的起点。将病人头位转向术者,牵开鼓 The author describes the mammogram exploration of lost facial nerve method is: posterior incision, do Palva muscle flap, without separation of the posterior wall of the soft tissue of the ear, in the mastoid hesitated open dorsal muscle crest exposed stem milk hole, from upward exposure Facial until the cone on the crypt. After entering the middle ear through this window, the anvils and anvil joints are separated and the anvil body is turned down into the middle ear. However, the anvil and the incus ligament should be retained. Follow the horizontal section of the facial nerve tube to catch the spondylosis, scoring the upper and lower semicircular cans and scrubbing until the blue line is revealed; then, tracing inward and forward to find the geniculate ganglia within the hammerhead, Under the dural dura, the facial nerve emerges sharply at this acute angle to the level of the semicircular canal ampulla at the end of progression, since then is the starting point of facial nerve lost. Turn the patient’s head to the surgeon and retract the drum