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首页> 外文期刊>Otolaryngology--head and neck surgery: official journal of American Academy of Otolaryngology-Head and Neck Surgery >The cochlear aqueduct: an important landmark in lateral skull base surgery.
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The cochlear aqueduct: an important landmark in lateral skull base surgery.

机译：耳蜗导水管：颅骨外侧基底手术的重要标志。

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摘要

The cochlear aqueduct (CA) is used as a landmark in lateral skull base surgery. In this study anatomic relationships between the CA and adjacent neurovascular structures were examined by dissecting 32 temporal bones. Observations of the relationship of the external opening (EO) of the CA with the ninth, tenth, and eleventh cranial nerves, inferior petrosal sinus (IPS), and intrapetrous carotid artery (ICA) were noted. In addition to the distance of the EO of the CA to the vertical portion of the ICA, the entire length of the CA and the width of the EO were also measured. The ninth nerve was the only structure lodged at the EO of the CA in 34.4% of bones. However, in 40.6% of bones only the IPS crossed the EO of the CA, although the ninth nerve was situated just anteroinferiorly in the vicinity of the EO. In 15.6% of bones it was possible to observe both the ninth nerve and the IPS crossing the EO. In 9.4% of bones the EO of the CA was found to be occupied by the tenth and eleventh nerves. It was also observed that the ICA was located anteriorly on the same sagittal plane with the EO in 15.6% of bones. It was concluded that although in 90% of cases the EO of the CA was in close relation with the ninth nerve, other structures such as the IPS, the tenth and eleventh cranial nerves, and the ICA were also at risk during drilling in this area because of their intimate relationships with the EO of the CA.
机译：耳蜗导水管（CA）用作外侧颅底手术的标志。在这项研究中，通过解剖32个颞骨检查了CA与相邻神经血管结构之间的解剖关系。观察到CA的外部开口（EO）与第九，第十和第十一颅神经，下睑窦（IPS）和颈内动脉（ICA）的关系。除了CA的EO到ICA垂直部分的距离外，还测量了CA的整个长度和EO的宽度。第9条神经是34.4％的骨骼中唯一位于CA EO的结构。但是，在第40条骨骼中，第九神经位于EO的正下方，尽管只有IPS穿过了CA的EO。在15.6％的骨头中，可以观察到第九神经和穿过EO的IPS。在9.4％的骨骼中，发现CA的EO被第十和第十一条神经占据。还观察到，ICA位于15.6％的骨骼中，与EO位于同一矢状平面上。结论是，尽管在90％的病例中，CA的EO与第九神经密切相关，但在该区域的钻孔过程中，其他结构（如IPS，第十和第十一颅神经和ICA）也处于危险之中因为它们与CA的EO有密切关系。

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