Parke W W, Gammell K, Rothman R H
J Bone Joint Surg Am. 1981 Jan;63(1):53-62.
Vascular injection of eleven perinates revealed that each lumbosacral spinal-nerve root received its intrinsic blood supply from both distal and proximal radicular arteries through which the blood flowed toward a mutual anastomosis in the proximal one-third of the root. Segmental arteries supplied the distal vessels while their proximal equivalents received blood from their respective anterior or dorsolateral spinal arteries, which derived their flow from the large, irregularly located medullary arteries.
The region of relative hypovascularity formed below the conus by the combined areas of anastomoses in the cauda equina may provide an anatomical rationale for the suspected neuroischemic manifestations concurrent with degenerative changes in the lumbar spine.
对11例围产儿进行血管注射显示，每一条腰骶神经根的固有血供都来自远端和近端的神经根动脉，血液通过这些动脉流向神经根近端三分之一处的共同吻合处。节段动脉供应远端血管，而其近端对应血管则从各自的前脊髓动脉或背外侧脊髓动脉接受血液，这些动脉的血流来自位置不规则的粗大髓质动脉。
马尾神经吻合区域在圆锥以下形成的相对缺血区域，可能为腰椎退变时并发的疑似神经缺血表现提供解剖学依据。
