5Watts C. Syndrome of intradiscal lumbar herniation. Clinical presentation and management[J]. Surg Neurol, 1988, 30:263 -267.
6Olmarker K, Rydevik B, Dahlin LB, et al. Effects of epidural and intratheeal application of eollagenase in the lumbar spine :an experimental study in rabbits[J]. Spine, 1987, 12:477 -482.
7Artigas J. Complications following chemonucleolysis with collagenase[J]. J Neurosurg, 1994, 61 : 679 - 681.
8Brock M, Roggendorf W, Gorge HH, et al. Severe local tissue lesions after chemonucleolysis with collagenase [J]. Surg Neurol,1984, 22: 124- 131.
9Rydevik B, Brown MD, Ehira T, et al. Effects of collagenase on nerve tissue. An experimental study on acute and long-term effects in rabbits. Spine[J]. 1985, 10:562 - 566.
10Walk D, Fisher MA, Doundoulakis SH, et al. Somatosensory evoked potentials in the evaluation of lumbosacral radiculopathy[J]. Neurololgy, 1992, 42:1197 - 1202.