脊髓后动脉由椎动脉或小脑下后动脉发出左右两条脊髓后动脉,沿脊髓后外侧下行,沿途接受后髓动脉的补充。脊髓后动脉供应脊髓后四分之一。
(2)脊髓后动脉 (posterior spinal artery):为椎动脉人颅后第 1对分支,也可与小脑后下动脉共干,发出后绕行颈髓的外侧,于脊髓后外侧面沿外侧沟下行,途中与多支根动脉相...
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... 脊髓管 myelocele 脊髓后动脉 arteria spinalis posterior 脊髓后静脉 posterior spinal veins ...
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... 脊髓前动脉 anterior spinal a. 脊髓后动脉 posterior spinal a. 小脑下后动脉 posterior inferior cerebellar a. ...
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结果2 例病变位于颈段脊髓内,5 例在胸段脊髓内。5 例畸形血管由脊髓前动脉供血,2 例由脊髓后动脉供血。
Results Among the 7 patients, 2 patients the lesions were in the cervical and 5 patients lesions were in thoracic. 5 on anterior spinal artery and 2 on posterior spinal artery.
从另外一面来看,对脊髓型颈椎病和后纵韧带骨化的患者来说,如果潜在的椎动脉和神经损伤的风险纳入考虑,使用颈椎椎弓根螺钉并无指征。
On the other hand, there is no indication in cases of typical CSM and OPLL if a potential risk of vertebral artery or nerve injury is taken into account.
目的:观察脊髓前动脉损伤后脊髓组织形态学演变过程,研究病理机制。
Objective:To observe the histomorphologica l outcome of medullary ischemia caused by anterior spinal cord artery injury, research the pathologic mechanism.
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