5Pavlov H,Torg JS,Robie B,et al.Cervical spinal stenosis:determination with vertebeal body ratio method[J].Radiology,1987,164:771-775.
6Yonenobu K,Okzo K,Fuji T,et al.Causes of neurologic deterioration following surgical treatment of cervical myelopathy[J].Spine,1986,11(8):818-823.
7White AA 3rd,Panjabi MM.Update on the evaluation of instability of the lower cervical spine[J].Instr Course Lect,1987,36:513-520.
8Pope MH,Pajabi M.Biomechanical definition of spinal instability[J].Spine,1985,10(3):255-256.
9Hacker RJ.A randomized prospective study of an anterior cervical interbody fusion device with a minimum of 2 years of follow-up results[J].J Neurosurg,2000,93(S2):222-226.
10Hacker RJ,Cauthen J,Gibert TA.A prospective randomized multi-center clinical evaluation of an anterior cervical fusion cage[J].Spine,2000,25(20):2646-2655.
