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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 期听力重建的方法。方法 :以同种异体肋软骨为外耳道后壁重建、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 1 5d B以上或达应用水平 55耳 (77.5% ) ,听力提高未达 1 5d B1 1耳(1 5.5% ) ,因不同原因失败 5耳 (7.0 % )。结论 :用同种异体肋软骨行乳突根治术后的中耳重建术 ,是解决乳突腔重新中耳化、听力重建、防止术腔感染的较为理想的术式
OBJECTIVE: To investigate the method of re-middle ear and re-hearing reconstruction of mastoid cavity with external auditory canal open to the ear after radical mastectomy. Methods: Allogeneic costal cartilage was used as reconstruction material of posterior wall of external auditory canal, mastoid filling and reconstruction of ossicular chain. Middle ear reconstruction was performed on 71 cases (ears) after radical mastectomy. Results: After 0.5 years of follow-up, the external auditory meatus of all cases except 2 ears were close to the normal physiological structure. The hearing ability increased more than 15 days or 55 ears (77.5% 1 5d B1 1 ears (1 5.5%), 5 ears (7.0%) failed for different reasons. CONCLUSION: Middle ear reconstruction after radical mastoidectomy with allograft costal cartilage is an ideal method to solve the problem of middle ear, re-ear reconstruction, and prevention of infection in the mastoid cavity