目前乳突手术的趋向是如何重建鼓室、乳突的正常解剖关系及恢复功能,以提高听力和解决由乳突术腔造成的一些问题。作者用异体膝关节半月板软骨修补由于开放乳突气房造成的外耳道后壁缺损,其优点是半月板软骨有一个微弯曲的渐薄边缘。适合于移植鼓膜的附着及保持鼓室、乳突的正常解剖关系。文章简单地介绍了手术方法。并报告三个成功病例。 The current trend of mastoid surgery is how to rebuild the normal anatomy of the tympanic mastoid and restore function to improve hearing and solve some problems caused by the mastoid cavity. The authors use allogeneic knee meniscus cartilage repair due to the opening of the mastoid posterior wall of the external auditory canal defect, the advantage is that the meniscus cartilage has a slightly curved thin edge. Suitable for transplantation of tympanic membrane attachment and maintain the normal anatomy of the tympanic mastoid. The article briefly introduced the surgical method. Three successful cases were reported.