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目的通过对小脑幕上颞枕叶桥静脉的观察,为相关手术入路提供解剖学基础。方法对20例(40侧)静脉内灌注蓝色乳胶的成人头颅湿标本去除颅骨后进行观察。结果颞枕叶小脑幕上桥静脉注入点的形态表现为单干型、多干型及烛台型。根据注入点的位置将其分为横窦组、岩部组、小脑幕组及横窦上组,其中横窦上组桥静脉存在于11侧(27.5%)大脑半球。注入点的数目共96个,引流桥静脉的数目共312支;Labbé静脉直径为(2.86±0.80)mm,其中横窦组Labbé静脉距硬膜窦角距离为(18.26±9.54)mm。结论了解小脑幕上颞枕叶桥静脉的解剖有利于在侧颅底等手术避免损伤Labbé静脉和其他桥静脉,从而降低手术后并发症发生的可能性。
Objective To observe anatomical temporal occipital veins in the supratentorial tentorium and provide anatomical basis for related surgical approaches. Methods Twenty skull samples were obtained from 20 adult (40 sides) patients with intravenous infusion of blue latex. Results Temporal occipital cortex on the supratentorial superior vena cava injection site morphological manifestations of dry type, dry type and candlestick type. According to the location of the injection point, it was divided into transverse sinus group, petrous group, cerebellum group and transverse group. Among them, the superior transverse group of the transverse sinus was located in 11 hemispheres (27.5%). The number of injection sites was 96, and the number of drainage bridges was 312. The diameter of Labbé vein was (2.86 ± 0.80) mm. The transverse distance of Labbé vein from the dural sinus was (18.26 ± 9.54) mm. Conclusion Understanding the anatomy of the temporal occipital lobe vein in the supratentorial tentorium is helpful to avoid the injury of Labbé veins and other bridging veins in the skull base and thus reduce the possibility of postoperative complications.