Gupta Manish, Singh Sunder, Gupta Monica
Department of ENT, Gian Sagar Medical College and Hospital, 1156-C, Govt. Medical College and Hospital Campus, Sector 32-B, Chandigarh-160030, India.
Ear Nose Throat J. 2013 Jun;92(6):E21. doi: 10.1177/014556131309200616.
We report a rare case of incus dislocation into the external auditory canal following a head injury. The patient was a 35-year-old man who presented to the surgical emergency unit with a head injury that he had sustained during a traffic accident. An x-ray of the skull detected a longitudinal fracture of the right temporal bone. The ENT examination revealed the presence of a bony structure and a blood clot in the right external auditory canal. Computed tomography identified a disruption of the ossicular chain, with an incus-like bony shadow in the external canal. The wide opening of the fracture line and the impact of the accident were believed to have pushed the incus through the fracture and into the external canal. The patient was successfully treated with exploratory tympanotomy and ossiculoplasty.
我们报告一例头部受伤后砧骨脱位至外耳道的罕见病例。患者为一名35岁男性，因在交通事故中头部受伤被送至外科急诊室。颅骨X线检查发现右侧颞骨纵行骨折。耳鼻喉科检查发现右侧外耳道有一骨质结构和血凝块。计算机断层扫描显示听骨链中断，外耳道内有一类似砧骨的骨质阴影。据信骨折线的 wide opening 及事故冲击力将砧骨推过骨折处进入外耳道。患者通过探查性鼓室切开术和听骨成形术成功治愈。 （注：原文中“wide opening”表述不太准确，推测可能是“较大开口”之类意思，但按要求未做修改直接翻译）
