摘要
目的通过显微解剖观察上矢状窦旁桥静脉注入口的形态特点,为脑静脉血栓形成发病机理的解释提供形态学依据。方法 30例(60侧)成人头颅湿性标本,观测记录注入口的数目、分布、类型及走行。结果上矢状窦旁桥静脉共有注入外口367个(桥静脉与硬脑膜连接处,位于上矢状窦腔外),注入内口(桥静脉在上矢状窦腔内的开口)375个,其中有8个注入外口分别对应两个注入内口。注入口集中分布在上矢状窦前段和后段,分直接注入和间接注入(注入外口经脑膜静脉或硬膜旁窦走行一段距离后到达注入内口)两种类型。37%的上矢状窦后段注入口为间接注入,其中85%使得桥静脉由逆行注入上矢状窦变为垂直或顺行注入。结论上矢状窦旁桥静脉注入口复杂多样,且常使桥静脉逆行、垂直和顺行注入上矢状窦内的方式发生改变,在一定程度上可以对抗脑静脉血栓形成的发生。
Objective To perform a microanatomy of the orifice of cerebral bridging veins （BVs）into the superior sagittal sinus （SSS）,in orderto provide a morphologic basis forthe mechanism of cerebral venous thrombosis. Methods Thirty cadaveric head specimens were used in this study. The number,location,types and distribution of the orifice were recorded. Results A total of 367 outer orifices and 375 inner orifices were found. The outer orifice was the junction outside of the SSS between BV and dural mater. The inner orifice was the sinusal entrance inside of the SSS. Foreight cases,two innerorifices drained one of BVs into the SSS with one outerorifice. The orifice mainly located in the anterioror posterior segments of the SSS. Most of outer orifices （70%） directly drained into the SSS,and the others drained into the SSS indirectly by the meningeal veins orparasagittal sinues. A part of outerorifices （37%） drained into the posteriorsegment of SSS indirectly,in which 85%of them changed the direction of the BVs from against the direction of blood flow in the sinus to along or at a right angle. Conclusions This study reveals the complexity of the orifice which commonly changed the direction of the BVs and played an important role for reducing the cerebral venous system thrombosis.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2010年第4期355-357,共3页
Chinese Journal of Clinical Anatomy
基金
安徽省自然科学基金(070413072)
安徽省学术与技术带头人科研基金
安徽医科大学博士科研资助基金(XJ200911)
关键词
上矢状窦
桥静脉
注入口
显微解剖
Superior sagittal sinus
Cerebral bridging vein
Orifice
Microanatomy
