国人耳蜗导水管显微外科解剖

Microsurgical anatomy of cochlear aqueduct in Chinese

目的 :为迷路进路手术中所遇到的耳蜗导水管及其周围的结构提供显微解剖学数据。 方法 :选用 2 0具甲醛固定的成人尸头 (共 4 0侧 )进行耳蜗导水管的显微解剖 ,并进行测量和观察。 结果 :耳蜗导水管外口宽度为 (2 .6 4± 0 .82 ) m m ,长度为 (8.4 0± 1.35 ) mm ,耳蜗导水管外口到内听门下唇的距离为 (5 .5 3± 0 .93) mm ,外口至 脑神经距离为 (1.0 8± 0 .36 ) m m,外口至 脑神经距离为 (2 .71± 0 .6 3) m m,外口至 脑神经距离为 (4.5 2± 1.2 5 ) mm。结论 :在迷路进路手术中 ,走行于内听道与颈静脉球之间的耳蜗导水管可作为避免伤及其他重要结构的标志。

Objective: To obtain detailed microsurgical anatomic data of cochlear aqueduct for translabyrinthine approach. Methods: Twenty cadaver heads (40 sides) fixed with formalin were dissected under the microscope,and cochlear aqueduct was observed and measured. Results: It was found that the width of external aperture of cochlear aqueduct was (2.64± 0.82) mm, the length of cochlear aqueduct was (8.40±1.35) mm, and the distance between cochlear aqueduct and cranial nerves Ⅸ, Ⅹ, Ⅺ were(1.08±0.36), (2.71±0.63) and (4.52 ±1.25) mm,respectively. The distance between external aperture of cochlear aqueduct and the inferior margin of internal acoustic meatus aperture was (5.53 ±0.93) mm. Conclusion: Cochlear aqueduct can be regarded as one of the landmarks in translabyrinthine approach for cerebellopontine angle operation.