乳突凿开术和鼓室成型术的目的,是清除病灶达到干耳和重建声音传导结构以提高听力。近二十年来,由于对耳的解剖生理等基础知识认识的提高,抗菌素的发展和广泛应用,以及手术显微镜的应用和手术技术的改进,使 The purpose of mastoidosis and tympanoplasty is to clear the lesion to dry ear and rebuild the sound-conducting structure to improve hearing. The past two decades, due to the understanding of the basic anatomy and physiology of the ear increased awareness of the development and widespread use of antibiotics, as well as surgical microscopes and surgical techniques to improve,