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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 observe the morphological characteristics of the superior sagittal sinus vestibule by microsurgical dissection and provide a morphological basis for the explanation of the pathogenesis of cerebral venous thrombosis. Methods 30 cases (60 sides) of adult head wet specimens were observed and recorded the number of injection port, distribution, type and walk. RESULTS: A total of 367 external ostia were implanted into the superior sagittal sinus veins (the junction of the bridge vein and dura mater, located outside the superior sagittal sinus cavity) and the 375 injected into the internal os (the opening of the bridge vein in the superior sagittal sinus) , Of which 8 were injected into the external port corresponding to the two injected into the mouth. The injection port is mainly distributed in the anterior and posterior segments of the superior sagittal sinus, and is divided into two types: direct injection and indirect injection (injected into the outer mesencephalic vein or paraventricular paravalvum to reach the inner mouth after some distance). 37% of the superior sagittal sinus posterior segment of the injection port for indirect injection, 85% of which make the bridge from the retrograde retrograde injection of the superior sagittal sinus into vertical or straight injection. Conclusions The superior sagittal sinus venous access port is complex and diverse, and it often causes retrograde bridging veins, vertical and anterograde injection into the superior sagittal sinus, which can antagonize the occurrence of cerebral venous thrombosis to a certain extent.