探讨不同保存方法对同种异体肋软骨移植的影响。
To study the influence of the different preservative methods on homograft costal cartilage.
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。
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.
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