乳突根治术后外耳道后壁重建并Ⅰ期鼓室成形术的疗效观察

目的：探讨处理好乳突根治术后遗留的外耳道后壁缺损及开放的突腔的方法。方法：以乳突根治术治疗胆脂瘤型中耳炎３１耳，骨疡型３耳。并行外耳道后壁中Ⅰ期鼓室成形术，修补外耳道后壁缺损及开放的乳突腔。结果：经５年随访观察，外耳道接正常形态，保留含气突腔，达社交听力者１６耳，达实用听力者１６耳。结论：乳突根治术后外耳道后壁重建并Ⅰ期鼓室成形订，对解决乳突根治后遗留乳突腔或大外耳道，改善听力，是一种较为实用的手

Observation of curative effect of radical mastoidectomy with rebuilding back wall of external cance and defect tympanoplasty

Objective:To manage the back wall defect of external acoustic canal and opened mastoid cavity which was remained from radical mastoidectomy. Method: 31 ears with cholesteatomatous otitis media and 3 ears with skeletal ulcer were treated by primary operation which consisted of radical mastoidectomy with rebuilding back wall of external canal and tympanoplasty. Result:All cases were followed up for 5 years. And all of external auditory canal are normal in appearance. Sixteen ears reached auditory level for social interaction and another 16 for functional audition. Conclusion:The Primary operation that we mentioned above may resolve some problems such as mastoid cavity or big external canal which were remained from radical mastoidectomy. It is effective to improve hearing.