Twenty-four ears treated by canaloplasty of external auditory meatus and tympanoplasty, hammer and incus hypoplasia in 19 ears, stapes abnormity were demonstrated in 11 ears, ossicles absence in 3 ears, vestibular window clausura in 1 ears.

• 24耳行手术治疗,术中发现锤、砧骨发育不全19耳,镫骨畸形11耳,镫骨缺失3耳,前庭窗闭锁1耳。