一般来说熟悉颞骨解剖的手术者不易损伤面神经,但如果由于感染、先天性畸形、二次手术或外伤造成解剖标志不清时,即使非常熟练而且有经验的手术者也可能损及面神经。一、面神经的畸形和变异:1. 骨管裂开:就手术所见,面神经鼓室段骨管的先天性裂开大约 In general, surgeons familiar with the anatomy of the temporal bone are less likely to damage the facial nerve, but even the most experienced and skilled surgeons may damage the facial nerve if anatomical signs are unclear due to infection, congenital anomalies, secondary surgery, or trauma. First, facial deformities and variations: 1. Bone crack: on the surgical findings, facial nerve segment of the tympanic canal congenital dehiscence about