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目的探讨改良眶颧-海绵窦入路增加基底动脉上段显露的方法。方法在10例标本上模拟了经眶颧-海绵窦入路,同时增加磨除前后床突,观察对基底动脉上段显露的改善情况。结果磨除前床突后形成的间隙为床突间隙,存在于颈内动脉与动眼神经间的膜为颈内动脉动眼神经膜。(沿此膜即可进入海绵窦,磨除后床突后,暴露鞍背、上斜坡,即可显露基底动脉上段)单纯眶颧入路显露基底动脉的长度(5.66±1.07mm),视角(前后方向48.6±5.1°,上下方向51.9±5.5°);附加磨除前后床突后显露基底动脉的长度(7.68±1.12mm),视角(前后方向56.5±5.7°,上下方向61.9±6.0°)。结论经眶颧-海绵窦入路中磨除前床突和后床突,可显著增加对基底动脉上段的显露。
Objective To explore the method of improving orbital zygomatic - cavernous sinus approach to reveal the upper basilar artery. Methods 10 cases of specimens through the orbital zygomatic - cavernous sinus approach, while increasing the bed before and after ablation, to observe the improvement of the upper basilar artery revealed. Results The gap formed by ablation of the anterior bed was the intercostal space, and the membrane between the internal carotid artery and the oculomotor nerve was the oculomotor tunica intima. (Along the membrane can enter the cavernous sinus, after removal of the bed after the sudden exposure, the back of the saddle, the slope, you can reveal the upper basilar artery) simple orbital zygomatic approach revealed basilar artery length (5.66 ± 1.07mm) 48.6 ± 5.1 ° in the anteroposterior direction and 51.9 ± 5.5 ° in the anterior-posterior direction); the length of the basilar artery (7.68 ± 1.12 mm) and the viewing angle (56.5 ± 5.7 ° in the anterior-posterior direction and 61.9 ± 6.0 ° in the up-down direction) . Conclusion Ablation of the anterior and posterior bed bumps through the orbital zygomatic-cavernous approach can significantly increase the exposure of the upper basilar artery.