Objective To evaluate the effect of intact canal wall open technical tympanoplasty(IWT) and lower wall open technical tympanoplasty(LWT) on chronic suppurative otitis media(CSOM).

• 目的探讨慢性化脓性中耳乳突炎手术方式及适应证的选择,比较鼓室完壁式和低壁式开放技术鼓室成型术治疗慢性中耳乳突炎疗效。