海绵窦上段动眼神经的应用解剖研究

目的：探讨海绵窦上段动眼神经的应用解剖并讨论其临床意义。方法：经血管灌注后观测10例尸颅的海绵窦上段动眼神经及其毗邻与血供。结果：海绵窦上段动眼神经与海绵窦上段背侧紧邻海马钩回，内侧与视交叉、后交通动脉毗邻，外上与脉络膜前动脉相邻，腹侧紧贴鞍背突。海绵窦上段动眼神经80％未见神经外营养血管，可见20％后交通动脉发出1～2根分支进入神经。结论：海绵窦上段动眼神经毗邻结构复杂，滋养血管细小；在海绵窦上缘手术时，应特别注意辨认和保护动眼神经。

Applied anatomy of the supra-cavernous sinus segment of oculomotor nerve

Objective:To study the applied anatomy and clinical significance of the supra-cavernous sinus segment of oculomotor nerve.Methods:After ten craniums were instillated ,the adjacency and blood supply of the oculomotor nerves were observed.Results:The dorsal surface of superior cavernous sinus sticks to hippocampi,inside of it abut on optic chiasma,posterior communicating artery;superior-lateral of it abut on anterior choroidal artery,the ventral surface of it stick to dorsum saddle.It was found that 80 percent of the superior cavenous sinus segment of the oculomotor nerve had no nourishing vessels to enter,but 20 percent of the segment mentioned above had one or two branches of the posterior communicating artery to enter.Conclusion:The supra-cavernous sinus segment of oculomotor nerves and their nourishing vessles should be discerned and protected especially when operated in superior margin of cavernous sinus because its neurovascular relationships are complicated and the nourishing vessels are tiny.