鼓室成形术較之中耳其他的手术更接近面神经管。面神經管稍突出于鼓室内,该处的管壁很薄;大約有一半的病例有裂縫,或仅以结締组織层封閉。卵圆窗上方之面神經管有血管与鼓室粘膜相通,且常有胆脂瘤与深部骨炎,后者本身可导致面神經管的破坏。自1955年至1957年止观察了233例以Wullstcin氏法进行鼓室成形术的患者;27例形成大鼓室腔,206例为小鼓室腔。与手未有关的面神經麻痺共27人,占总数的11.6％,其中在术时发生的有10人,占4.3％,在术后 Tympanoplasty is more proximal to the facial nerve canal than other procedures in the middle ear. The facial nerve tube protrudes slightly inside the tympanic cavity where the wall of the tube is very thin; about half of the cases have a crack, or only the connective tissue layer. The surface of the oval window above the surface of the neural tube and mucosa communicating with the tympanic cavity, and often have cholesteatoma and deep osteitis, the latter itself can cause facial nerve tube damage. From 1955 to 1957, 233 patients undergoing tympanoplasty by Wullstcin’s method were observed. Twenty-seven patients developed a tympanic cavity and 206 as a bongo-cavity. A total of 27 facial nerve paralysis not related to hand, accounting for 11.6% of the total, of which 10 occurred during surgery, accounting for 4.3% after surgery