Although the vertebral collateral circulation is generally abundant, in rare instances ligation of all lumbar vessels has produced spinal ischemia and paralysis.

• 尽管一般来说，脊椎的侧支循环还是很丰富的，但在少数情况下，如果把所有的腰血管结扎就会出现脊椎缺血和瘫痪。