1[1]Boden SD,Davis,D O,Dina,TS,et al. Abnormal magnetic-resonance scans of the lumbar spine in asymptomatic subjects: A prospective investigation[J], J. Bone and Joint Surg(A),1990, 72:403-408.
3[3]Jonsson B,Stromgvist B. Symptoms and signs in degeneration of the lumbar spine:A prospective consecutive study of 300 operated patients[J], J: Bone andJoint surg(B), 1993, 75(3): 381-385.
4[4]Borenstein DG,O'Mara JW Jr,Boden SD, et al. The value of magnetic resonace imaging of the lumbar spine to predict low-back pain in asymptomatic subjects : A seven-year follow-up study[J]. J Bone Joint Surg Am(A). 2001,83(9):1306-1311.
5[5]Dyck P,Doyle JP.,Jr."Bicycle test" of van Gelderen in diagnosis of intermitent cauda equine compression syndrome[J], Case report. J.Neurosurg. 1977, 46:667-670.
6[6]Deen HG,Zimmerman RS,Lyons MK,et al: Measurement of exercise tolerance on the treadmill in patient with symptomatic lumbar spinal stenosis: A useful indicator of functional status and surgical outcome[J] J. Neurosurg,1995, 83: 27-30.
7[7]Fritz JM,Erhard RE,Delitto A,et al. Preliminary results of the use of a two-stage treadmill test as a clinical diagnostic tool in the differential diagnosis of lumbar spinal stenosis[J] J, Spinal disord. 1997, 10: 410-416.
