内淋巴囊的显微外科解剖

Microsurgical anatomy study of the endolymphatic sac

目的 :为后颅窝手术保护听力提供解剖学基础。方法 :2 0例甲醛固定后的成人头颅 (4 0侧 ) ,游标卡尺和量规测量内淋巴囊壁与表面标志的距离。结果 :内淋巴囊与内听道口后缘的平均距离为 1 1 6± 0 .1 4cm ,与XI神经后缘的距离 1 3 8± 0 .1 7cm ,岩嵴与乙状窦前缘相交点的平均距离为 1 67± 0 .3 5cm ,与岩嵴平均距离为 0 1 6± 0 .2 8cm。结论 :本文结果有助于后颅窝手术定位内淋巴囊 。

Objective:To study the microanatomy of the endolymphatic sac for the hearing preservation in surgery.Methods:The endolymphatic sacs of 20 adult cadaver heads (40 sides) were examined.Result:On the average,the endoymphatic sac was found to be (1.38±0.17 cm) posterosuperior to the Ⅺ nerve in the jugular foramen,(1.16±0.14 cm) posterior to the internal auditory meatus,and in front of the petro sigmoid intersection at a point of (1.67±0.35 cm),(0.16±0.28 cm) below the petrous ridge.Conclusion:The result of this study is helpful in localizing this structure and saving the hearing.