摘要
目的 探讨Liliequist膜的显微解剖及其手术意义。方法 在手术显微镜下观测 15例尸头的Liliequist膜。结果 Liliequist膜是前切迹空间的网膜结构 ,鞍背、动眼神经、下丘脑及基底动脉是其主要附着结构 ,分下丘膜、间脑膜和中脑膜三类叶 ,伸向内上方、后上方及后 (下 )方 ,其大小、性状及附着均有较大差异 ,同垂体柄和后交通动脉等有纤维联系。结论 该膜可维系鞍后诸结构的空间位置 ,下丘膜分隔后交通动脉池与视交叉池 ,间脑膜主要分隔视交叉池与脚间池 ,中脑膜主要分隔脚间池与桥前池 ,均是重要的手术标志和界面。经幕上达到基底动脉尖或上斜坡 ,需经过该膜 。
Objective To study microsurgical anatomy and surgical significance of Liliequist's membrane. Methods Liliequist's membranes of 15 cadevar were observed using an operating microscope.Results Liliequist's membrane was an arachnoidal structure in anterior incisural space. Dorsum sellae, oculomotor nerves, hypothalamus and basilar artery were all attaching structures of it. It included three sheets:hypothalamic membrane, diencephalic membrane and mesencephalic membrane. They extended mediosuperiorly, posterosuperiorly and posteriorly or posteroinferiorly,respectively. Their sizes, structures and the attaching sites varied greatly. There were fibrious connections between the membranes and hypophyseal stalk or posterior communicating arteries. Conclusions The membranes could maintain the original locations of postosellar structures. Hypothalamic membrane separates the cistern of posterior communicating artery and chiasmatic cistern. Diencephalic membrane mainly separates chiasmatic and interpeduncular cisterns, while mesencephalic membrane manly separates interpeduncular and prepontine cisterns. Three sheets are all important landmarks and interfaces in operations. For the approach to basilar tip or upper clivus supratentorially, these membranes need to be passing through and could be incised safely.
出处
《中华神经外科杂志》
CSCD
北大核心
2002年第4期252-255,共4页
Chinese Journal of Neurosurgery
基金
福建省自然科学基金资助项目(C0 110 0 2 7)
