目前有关内淋巴囊的术式计有:内淋巴-蛛网膜分流术,内淋巴-乳突分流术和内淋巴囊减压术。但它们共同存在的一个问题是:必须在不损伤迷路结构和面神经的条件下找到内淋巴囊。本文目的在于:通过对正常颞骨进行解剖测量,以提供在Trautmann氏三角内易于辨认的界标(landmark)——砧骨短突、水平半规管凸、乙状窦的内缘——作内淋巴囊的定位;这样可避免暴露通常作为手术标志的后半规管“蓝线”,从而减少术后感音性聋的危险[House(1964)曾报告用暴露“蓝线”的方法进行手术,造成感音性聋的发生率为2%]。40个颞骨中的一半,作了完全的乳突凿开,在内淋巴囊的前庭部分注入染料,便作测量;另外20个颞骨则解剖至内淋巴囊的最低部位,以测 The current surgical procedures for endolymphatic sac include: endolymphatic - arachnoid shunt, endolymphomas shunt and endolymphatic sac decompression. However, one of their common problems is that the endolymphatic sac must be found without damaging the lost structures and facial nerves. The purpose of this paper is to provide an endolymphatic sac by providing anatomical measurements of the normal temporal bone to provide easily identifiable landmarks in the Trautmann’s triangle - an incus stump, horizontal semicircular canal prominence, and sigmoid sinus inner margins This avoids the exposure of the “blue line” of the posterior semicircular canal, often used as a surrogate marker, thereby reducing the risk of postoperative sensorineural deafness [House (1964) reported surgery with exposure to the “Blue Line” resulting in sensitivities The incidence of deafness is 2%]. One half of the 40 temporal bones were completely papillared, and dye was injected into the vestibular part of the endolymphatic sac for measurement. The other 20 temporal bones were dissected to the lowest part of the endolymphatic sac to measure