6 . posterior semicircular canal resection could get 15 10mni surgery scope . it could treat cerebellopontine angle lesions and save audition and balance , but could not treat internal acoustic meats lesions 颗骨内部和桥小脑角区的解剖学研究及其临床应用6 .后半规管切除可以获得约为15xl0 ~的手术操作范围,完全可以处理内听道口附近区域的较小病变。
Super - posterior semicircular canal resection s scope is wider than posterior semicircular canal resection and could treat internal acoustic meats lesions too . conclusion : we get the scope of the two different incisions of duramater . study the effect of the sigmoid sinus , jugular bulb and cerebellopontine angle area to retrolabyrinthine approach surgery 后、上半规管切除在外半规管以下所得范围同后半规管切除相似,在外半规管平面以上可以有一较大的暴露范围,可以一直暴露到内听道口,甚至可以暴露内听道的全程,因此可以在直视下处理内听道内的病变。