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先天性外耳道闭锁的矫治是困难的外科问题,它要求应用所有近代鼓室成形技术、全面颞骨外科解剖及其先天性变异特别是面神经变异的知识。较严重的耳郭畸形常伴随于外耳道闭锁,骨性闭锁较膜性普遍;常有中耳及其结构畸形,以槌砧骨融合多见,镫骨足板因为双重起源故多正常;外耳道未发育者下颌关节后移,下颌窝与乳突前壁接触并在中耳腔外方,乳突气房可正常或未发育,乙状窦、颅中窝板亦可异常;面神经降部向外向前移位在外耳道闭锁是普遍的,第二膝部正常呈120°角变成向前转60°并经两窗间经
The correction of congenital external auditory canal atresia is a difficult surgical problem that requires the application of all modern techniques of tympanoplasty, complete temporal bone anatomy and knowledge of congenital variations, especially facial nerve variations. The more common ear deformities often accompanied by external auditory canal atresia, bony atresia more common than the membrane; often middle ear and its structural deformity to mallet ankle fusion more common, stapes foot plate because of the dual origin so many normal; external auditory canal Development of mandibular joint after the shift, the mandibular fossa and mastoid anterior wall contact and outside the middle ear cavity, mastoid atrioventricular normal or undeveloped, sigmoid sinus, cranial fossa plate may also be abnormal; facial nerve descending outward Pre-displacement in the external auditory canal atresia are common, the second knee normal 120 ° angle into a forward turn 60 ° and the two windows through