乳突根治术后同种异体肋软骨中耳重建71例报告

目的：探讨乳突根治术后，让术耳向外耳道开放的乳突腔重新中耳化和Ｉ期听力重建的方法。方法：以同种异体肋软骨为外耳后壁重建、乳突充填和听骨链重建的材料，对７１例（耳）于乳突根治术后行中耳重建术。结果：７１耳术后经０．５￣５年随访，除２耳外，全部病例重建外耳道接近正常生理结构；听力提高１５ｄＢ以上或达应用水平５５耳（７７．５％），听力提高未达１５ｄＢ１１耳（１５．５％），因不同原因失败５耳（７．０％）。

Reconstruction for posterior wall of external meatus and sound transmission apparatus after radical Mastoidectomy

Objective:To reconstruct middle ear structure for open mastoid antrum with external auditory canal after radical mastoidectomy in one stage. Method:71 ears of post mastoidectomy (discharging 53 ears and dried up 18 ears) were undergone with reconstruction of middle ear. The posterior wall of external auditory canal, mastoid cavity and chain of ossicles were reconstructed with homologous costal cartilage.Result:69 ears of 71 cases were near normal structure followed up 6 months to 5 years after operations. The result showed hearing improvement over 15 dB were 55 ears (77.5%) and under 15 dB were 11 cases (15.5%). Five cases (7.0%) were failed.Conclusion:Reconstruction of middle ear with homologous costal cartilage is a ideal surgery to reconstruct hearing structure and avoid infection of middle cavity after radical mastoidectomy.