Conclusion: Reconstruction of acusticus back wall and hearing after radical mastoidectomy with homograft costal cartilage is effective to prevent mastoid cavity infection and improve hearing.
结论：以同种异体肋软骨对乳突根治术后耳行外耳道后壁及听力重建术，是防止乳突腔感染，提高听力的较理想方法。
The plasty of cavity of auricular concha and mastoid obliteration can raise drying ear rate.
耳甲腔成形和乳突腔骨膜瓣填充可增加干耳率。
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