Kim Seong Min, Lee Ho Yun, Kim Han Kyu, Zabramski Joseph M
Departments of 1 Neurosurgery and.
Otorhinolaryngology, Eulji University Medical Center, Eulji University, Daejeon;
J Neurosurg. 2015 Jul;123(1):9-13. doi: 10.3171/2014.12.JNS132840. Epub 2015 Feb 6.
The goal of this study was to develop a practical landmark for the safe and easy identification of the cochlea when performing anterior petrosectomy based on cadaver dissection results.
The cochlear line was defined as the line drawn from the crossing point between the greater superficial petrosal nerve (GSPN) and the petrous internal carotid artery to the line drawn over the apex of the superior circumference of the dura of the internal auditory canal at a right angle. The validity of the cochlear line marking the anteromedial perimeter of the cochlea at the angle of the GSPN and the internal acoustic canal as a practical landmark were evaluated using 5 cadaver heads.
The mean distance (± SD) measured from the cochlear line to the margin of the cochlear cavity was 2.25 ± 0.51 mm (range 1.50-3.00 mm).
Anterior petrosectomy can be performed more efficiently by using the cochlear line as a key landmark to preserve the cochlea.
本研究的目的是基于尸体解剖结果，开发一种在进行岩骨前部切除术时安全、简便识别耳蜗的实用标志。
耳蜗线定义为从岩浅大神经（GSPN）与岩部颈内动脉的交叉点向与内耳道硬脑膜上缘顶点垂直的线所画的线。使用5个尸体头部评估耳蜗线作为实用标志在GSPN与内耳道角度标记耳蜗前内侧边界的有效性。
从耳蜗线到耳蜗腔边缘的平均距离（±标准差）为2.25±0.51毫米（范围1.50 - 3.00毫米）。
通过将耳蜗线作为保留耳蜗的关键标志，可更有效地进行岩骨前部切除术。
