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在125例中国成人尸体上观察了肠系膜下动脉及其分枝,结果如下: 肠系膜下动脉的起点平面,多平第三腰椎及三、四腰椎间盘高度(89.6％),腹主动脉分叉的位置,多平第四腰椎及四、五腰椎间盘高度(86.4％),两者间的高低变动常相一致。左结肠动脉除有二例由肠系膜上动脉发出外,均由肠系膜下动脉发出。乙状结肠动脉的数目为1—4枝,其中以一枝(42.4％)和二枝(45.6％)的较多。乙状结肠直肠动脉为0—4枝,其中以一枝(40％)和二枝(32.8％)的较多。肠系膜下动脉范围内,边缘动脉的吻合可分为三型。多数边缘动脉吻合到达乙状结肠直肠动脉(64％)。本文就肠系膜下动脉下分分枝的命名和边缘动脉及“Sudeck氏点”问题作了讨论。
The inferior mesenteric artery and its branches were observed on 125 Chinese adult cadavers. The results were as follows: the origin plane of the inferior mesenteric artery, the third lumbar vertebrae and the third and fourth lumbar intervertebral disc height (89.6%), the abdominal aorta bifurcated Position, Doping flat lumbar fourth and fourth and fifth lumbar disc height (86.4%), the level of change between the two often consistent. In addition to the left colonic artery in two cases issued by the superior mesenteric artery, issued by the inferior mesenteric artery. The number of sigmoid arteries is 1-4, with one more (42.4%) and two more (45.6%). The sigmoid colorectal artery is 0-4 branches, of which more than one branch (40%) and two branches (32.8%). Within the scope of the inferior mesenteric artery, anastomosis of the marginal artery can be divided into three types. Most marginal arteries reached the sigmoid colon rectum (64%). This article discusses the sub-sub-arterial sub-branches under the naming and the edge of the artery and the “Sudeck’s point” issue is discussed.