Kornreich L, Hadar H, Sulkes J, Gornish M, Ackerman J, Gadoth N
Department of Imaging, Schneider Children's Medical Center of Israel, Petah Tikva, Israel.
Surg Radiol Anat. 1998;20(1):63-8. doi: 10.1007/BF01628118.
The object of this retrospective study was to determine the sites of abdominal aortic bifurcation and inferior vena cava confluence in relation to age and sex. The study group comprised 180 subjects (90 males and 90 females) divided into 9 groups by age (in decades). The positions of the aortic bifurcation and the inferior vena cava confluence were evaluated by CT, and linear regression models were fitted to the data. The positions of the aortic bifurcation and venous confluence showed a highly significant downward shift with increasing age (p = 0.0001). The shift was more pronounced in women. The mean site of the aortic bifurcation for the whole group was at lower L4 (range, upper L3 to upper S1); in males, it was at upper L4 (range, upper L3 to upper L5), and in females at lower L4 (range, upper L3 to upper S1). The mean site of the venous confluence for the whole group was at disc L4-L5 (range, lower L3 to upper S1); in males, it was at disc L4-L5 (range, upper L4 to disc L5-S1), and in females at disc L4-L5 (range, lower L3 to upper S1). Thus, the aorta and the inferior vena cava can extend as low as the level of S1. These data are of relevance in laparoscopic procedures, especially in laparoscopic lumbar discectomy.
这项回顾性研究的目的是确定腹主动脉分叉和下腔静脉汇合部位与年龄和性别的关系。研究组包括180名受试者（90名男性和90名女性），按年龄（以十年为单位）分为9组。通过CT评估主动脉分叉和下腔静脉汇合的位置，并对数据拟合线性回归模型。主动脉分叉和静脉汇合的位置随年龄增长呈现极显著的向下移位（p = 0.0001）。这种移位在女性中更为明显。整个组主动脉分叉的平均位置在L4椎体下部（范围，L3椎体上部至S1椎体上部）；男性在L4椎体上部（范围，L3椎体上部至L5椎体上部），女性在L4椎体下部（范围，L3椎体上部至S1椎体上部）。整个组静脉汇合的平均位置在L4-L5椎间盘（范围，L3椎体下部至S1椎体上部）；男性在L4-L5椎间盘（范围，L4椎体上部至L5-S1椎间盘），女性在L4-L5椎间盘（范围，L3椎体下部至S1椎体上部）。因此，主动脉和下腔静脉可低至S1椎体水平。这些数据在腹腔镜手术中具有相关性，尤其是在腹腔镜腰椎间盘切除术中。
