Zhang J, Li X, Tang Y
Department of Anatomy, Sanxia Medical College, Yichang, Hubei, P. R. China.
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 1997 May;11(3):146-8.
To investigate the influence of injury of nutrient artery on the blood supply of inner 2/3 of cortical and intramedullary tissue, the experiment was carried out on twenty-four rabbits. Four rabbits were killed and perfused with Chinese ink in femoral artery to survey the blood supply of intramedullary vessels. Others were received fracture on tibia and sacrificed respectively on the third, eighth, eighteenth, twenty-eighth, and forty-second days after fracture. Chinese ink was also perfused through femoral artery on those rabbits. The relative density of capillary vessels were determined. The results were as follows: when the nutrient artery was injured after fracture, blood supply to the intramedullary tissue and the inner 2/3 of cortical bone was interrupted. The intramedullary vessels were increared and dilated. During the whole course of healing of fraeture, the density of intramedullary capillary vessels were higher than normal. It was concluded that the anastomosis between the epiphysis and metaphysis was important in the reconstruction of collateral circulation in healing of fracture.
为研究滋养动脉损伤对皮质内2/3及髓内组织血供的影响，对24只家兔进行了实验。处死4只家兔，经股动脉灌注中国墨汁以观察髓内血管的血供情况。其余家兔造成胫骨骨折，并分别于骨折后第3天、第8天、第18天、第28天和第42天处死，同样经股动脉灌注中国墨汁。测定毛细血管的相对密度。结果如下：骨折后滋养动脉损伤时，髓内组织及皮质骨内2/3的血供中断，髓内血管增多、扩张。在骨折愈合的全过程中，髓内毛细血管密度均高于正常。结论：骨骺与干骺端之间的吻合在骨折愈合时侧支循环的重建中起重要作用。
