Conclusions: the posterior medullary arteries arise mostly alone. We should give attention to the great posterior medullary artery.
结论：多数后髓动脉单独起始，较大的后髓动脉应引起注意。
It is a general practice of the orthopaedic surgeons to strip the periosteum, to ream the medullary cavity etc, which may easily cause injury of the nutrient artery of the long bones.
骨膜剥离和髓腔扩大是骨科手术中常用的操作方法，滋养动脉在手术中受到损伤时也需结扎。
Objective:To observe the histomorphologica l outcome of medullary ischemia caused by anterior spinal cord artery injury, research the pathologic mechanism.
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。
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