Mutlu C, Govsa F, Unlu H H, Senyilmaz Y
Department of Otolaryngology, Faculty of Medicine, Adnan Menderes University, Aydin, Turkey.
Surg Radiol Anat. 1997;19(5):303-5. doi: 10.1007/BF01637598.
A study was undertaken to demonstrate the variational anatomy of the external aperture of the vestibular aqueduct in 90 human temporal bones obtained from 58 cadavers. Topographic landmarks of the posterior surface of the petrous bone are useful for general orientation and include the external aperture of the vestibular aqueduct, internal auditory meatus, sigmoid sinus, subarcuate fossa, superior petrosal sinus and cochlear canaliculus. We determined the mean distances from the external aperture of vestibular aqueduct to the above structures to be 10.98, 11.21, 9.42, 10.27 and 13.90 mm, respectively. Furthermore, the length of the external aperture of the vestibular aqueduct revealed significant differences between the right and left sides. The distances between the EAVA and certain anatomical structures on the posterior surface of the temporal bone should be taken into consideration during surgery. Knowing the variability of the position of the external aperture of the vestibular aqueduct may help surgeons avoid traumatizing, and thus producing inadvertent lesions to the hearing mechanism.
一项研究对取自58具尸体的90块人类颞骨的前庭导水管外口的变异解剖结构进行了研究。岩骨后表面的地形标志对于整体定位很有用，包括前庭导水管外口、内耳道、乙状窦、弓下窝、岩上窦和蜗小管。我们测定了从前庭导水管外口到上述结构的平均距离分别为10.98、11.21、9.42、10.27和13.90毫米。此外，前庭导水管外口的长度在右侧和左侧之间存在显著差异。在手术过程中应考虑到前庭导水管外口与颞骨后表面某些解剖结构之间的距离。了解前庭导水管外口位置的变异性可能有助于外科医生避免造成创伤，从而避免对听力机制造成意外损伤。
