耳穿透伤常引起外耳道损伤和鼓膜穿孔,发生听骨链损伤和外淋巴瘘的机率很少。报告2例耳穿透伤患者都主诉患耳听力下降,头部运动后出现轻微的眩晕。检查发现鼓膜穿孔,听力学检查提示传导性聋。无自发性眼震,瘘管试验阴性。分别于伤后24和48小时在局麻下行中耳探查术。均发现槌砧关节脱位,砧骨长脚接触面神经管,卵圆窗开放,镫骨深压入前庭。因此认为常规进行的外淋巴瘘试验能使人 Ear penetrating injury often causes external auditory canal injury and tympanic membrane perforation, the incidence of ossicular chain injury and perilymph fistula are rare. Reported 2 cases of ear piercing patients were mainly affected ear hearing loss, head movement after a slight dizziness. Examination found tympanic membrane perforation, audiological examination prompted conductive deafness. No spontaneous nystagmus, fistula test negative. 24 and 48 hours after injury in the local anesthesia underwent ear exploration. All found mallet anvil joint dislocation, incus long leg contact with the facial nerve tube, oval window open, stapes deep into the vestibule. Therefore, conventional tests of perilymph fistula can make people