Cliniques de Neurochirugie, Hôpital de Purpan, Centre Hospitalo-Universitaire de Toulouse, France.
J Neurosurg. 1971 Sep;35(3):253-62. doi: 10.3171/jns.1971.35.3.0253.
This study of the arterial blood of the spinal cord indicates that, of the 62 radicular branches (rami radiculares), at the most seven or eight truly participate in the vascularization of the spinal cord. The authors have observed that the situation and distribution of these branches enable the distinction of three large arterial areas: cervicothoracic, midthoracic, and thoracolumbar. The fixed nature of the intramedullary arterial distribution contrasts with the variability of the afferent arterial supplies. No demarcation permits separation of the vascularization of the spinal cord into anterior and posterior parts. The anastomotic systems situated on the arterial pathways are potentially valuable, but their functioning is problematical. The anterior spinal artery is not continuous, for in the midthoracic region there exists a critical narrow zone. The perimedullary anastomotic system appears insufficient while intramedullary anastomoses are without functional value.
本研究对脊髓动脉血进行了分析，结果表明，在 62 根神经根（rami radiculares）中，真正参与脊髓血供的只有 7 到 8 根。作者观察到，这些分支的分布情况可将其分为 3 个大的动脉区域：颈胸段、胸中段和胸腰段。脊髓内动脉分布的固定性与传入性动脉供应的可变性形成鲜明对比。没有任何界限可以将脊髓的血供分为前、后两部分。位于动脉通路上的吻合系统具有潜在的价值，但它们的功能尚不确定。前脊髓动脉并非连续的，因为在胸中段存在一个临界狭窄区域。软脊膜吻合系统似乎不够充分，而脊髓内吻合则没有功能价值。
