耳部手术 ,如先天性外耳道闭锁成形术 ,中耳乳突手术 ,听神经瘤手术等均可损伤面神经 ,导致周围性面瘫 ,其中以耳乳突手术损伤造成者最为常见。随着手术显微镜和耳用电钻的广泛应用 ,因中耳乳突手术引起面瘫的发生率已经从当时的 15 %降到 1% [1] 。我院1987年 8月～ 1996年 12 Ear surgery, such as congenital external ear canal atlantoplasty, middle ear mastoidectomy, acoustic neuroma surgery can damage the facial nerve, leading to peripheral facial paralysis, of which the most common cause of ear otorrhexis surgery. With the widespread use of surgical microscopes and ear drills, the incidence of facial paralysis due to mastoid surgery has dropped from 15% at the time to 1% [1]. Our hospital from August 1987 to 1996 12