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鼓膜成形术中,外耳道骨部明显前突、鼓膜完全穿孔或前下方穿孔、下鼓室较深且有上皮覆盖时,手术复杂,移植筋膜操作困难,往往不能在明视下完成;能够发生移植鼓膜的再穿孔、坏死、脱落和胆脂瘤再发。其原因是移植物营养不良和未完全切除上皮层。为此,作者采用以下手术方法:沿外耳道前壁的骨突出部(若无突出部分,则沿前下壁的边缘),由鼓膜纤维环向外作长10mm皮肤切口。在此切口的外端再作一个横切口。如残余的前部鼓膜清楚可见,则再在靠近纤维环处作一个横皮
In the tympanoplasty, the external auditory canal significantly prominent protrusion, the perforation of the tympanic membrane completely perforation or under the front, the lower tympanic cavity with epithelial coverage, the operation is complicated, difficult to operate fascia transplantation, often can not be done under the vision; to transplant Perforation of the tympanic membrane, necrosis, shedding and cholesteatoma recurrence. The reason is that the graft is malnourished and the cortex is not completely removed. To do this, the authors used the following surgical procedures: A 10 mm skin incision was made out of the tympanic membrane annulus along the bony prominence (or along the edge of the anterior inferior wall) along the anterior wall of the external auditory canal. In the outer end of this cut again for a transverse incision. If the residual anterior tympanic membrane is clearly visible, then a horizontal skin near the annulus