3Nagayama R,Nakamura H,Yamano Y,et al.An Experimental study of the effects of root ret raction on the posterior ramus[J].Spine,2000,25(4):418-424.
4曹丹庆 蔡祖龙主编.全身CT诊断学[M].北京:人民军医出版社,1996.475-477.
5Nagayama R, Nakamura H, Yamano Y, et al. An Experimental study of the effects of root retraction on the posterior ramus[ J]. Spine,2000,25 (4) :418 - 424.
7ThelanderU, FagerlundM, Friberg S, eta. 1 Describing the size of lumbar disc hemiations using computed tomography - a com- parison of different size index calculations and their relation to sciatica [ Jt. Spine, 1994, 19(17):1 979-1 984.