8Macnab I.Negative disc exploration:an analysis of the causes of nerve-root involvement in sixty-eight patients[J].J Bone Joint Surg Am,1971,53(5):891-903.
10Lundin O,Ekstrom L,Hellstrom M,et al.Exposure of the porcine spine tomechanical compression:differences in injury pattern between adolescents and adults[J].Eur Spine J,2000,9(6):466-471.
