椎动脉椎前部的解剖学及其起源变异研究

目的为解剖学和颈椎病手术治疗提供资料和参考。方法在114具成人尸体标本上观测椎动脉椎前部的起源、形态、行程和起始部外径。结果正常起源型:左侧89.47％、右侧100％起于锁骨下动脉。异常起源型均出现于左侧,占5.29％(12／227例),其中主要起于主动脉弓(83.34％):起点在左锁骨下动脉和左颈总动脉之间者占75％;起点在主动脉弓、左颈总动脉后方者占8.33％;起点在左颈总动脉和左颈外动脉者分别占8.33％,后者与枕动脉共干,而且起源和行程独特。左侧椎动脉外径41±0.09mm,右侧39±0.1mm。结论由于胚胎发育的关系,椎动脉起源异常主要发生在左侧,而且以起于主动脉弓为主。

Anatomy and its Qrigins Variation Researches of the Prevertebral Part for Vertebral Artery

Objective To provide the data and consults for anatomy with Clinic.Method:the origin,appearance,course,and original outer diameter of the prevertebral part for vertebral artery were investigated on 114 adult cadavers.Result:Normal origins type; 89.47% of Left side,right side 100% originated from the subclavian artery.The abnormal origins type appears rate as 5.29%,all in the left side.Rises primarily in the aorta arch (83.34% ) : the origins locate between the subclavian artery and the left common carotid artery (75% ),and locates posterior the left common carotid artery in the aorta arch (8.33% ).The origins locate in the left common carotid artery and the left external carotid artery (8.33%),respectively.The latter origin is special with the route of travel.The outer diameter of the left and right sides vertebral artery were 41±0.09mm and 39±0.1mm,respectively.Conclusion:From with the relation of the embryo growth,the vertebral artery origin takes place primarily unusually in the left side,and then rise in the aorta bow is lord.