镫骨与周围重要结构之间的空间狭小，尤其是与面神经、水平半规管距离小。
There are much more small Spaces between the stapes and the structures especially facial nerve and the lateral semicircular canal around it.
术中处理面神经隐窝病变时勿随意磨低锥隆起及鼓索隆起，以免损伤面神经镫骨肌支及鼓索神经。
Pyramidal eminence and chordal eminence should not be lowly abraded in order to avoid damaging the musculus stapedius and chorda tympani nerve when dealing with a facial recess lesion.
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