Objective To establish an animal model of graded tractive lumbar-sacral nerve root injury in rabbits, discuss the CSEP and MVD after lumbar-sacral nerve root injury.

• 摘要目的建立一种不同程度的腰骶神经根牵拉损伤动物模型，探讨脊髓神经根牵拉损伤后微循环和电生理改变。