鼓室成形术最常用的手术径路是耳内、耳后及耳道内切口,每种切口各有其优点和局限性。鼓室成形术的手术切口应使切取筋膜和直接检查全部病变暴露良好。本文通过40例成人颞骨研究,对外耳道前后壁的长度、前壁的突起和弯曲度、耳道后上棘突入耳道后部的深度,骨部耳道的前后径和垂直径、鼓膜与耳道前后壁的夹角及耳道底在下部鼓环上的膨出等均作了测量,从而对每种切口用于鼓室成形术时的利弊及如何加强 The most commonly used surgical approach to tympanoplasty is the incision in the ear, behind the ear and in the ear canal. Each incision has its own advantages and limitations. Tympanoplasty surgical incision should make fascia and direct examination of all lesions exposed well. In this paper, 40 cases of adult temporal bone study, the length of the anterior and posterior wall of the external auditory meatus, anterior wall protrusion and curvature of the ear, the posterior superior spinous process into the ear canal depth, anteroposterior diameter and vertical diameter of the ear canal, The angle between the anterior and posterior wall and the bulging of the bottom of the ear canal in the lower drum ring have been measured, the pros and cons of each incision for tympanoplasty and how to strengthen