6Clements DH,O'Leary PF.Anterior cervical discectomy and fusion[J].Spine,1990,15(10):1023-1025.
7Tippets RH,Apfelbaum RI.Anterior cervical fusion with the easpar instrumentation system[J].J Neurosurg,1988,22(6 Pt1):1008-1013.
8Brower RS,Herkowitz HN,Kurz L.Effect of distraction on union rates of Smith-Robinson type anterior discectomy and fusion[C].Presented at the twentieth annual meeting of the Cervical Spine Resoarch Society.Palm Desort,California,1992.
9An HS,Evanich CJ,Nowicki BK,et al.Ideal thickness of Smith-Robinson graft for anterior cervical fusion[J].Spine,1993,18(14):2043-2047.
10Bayley JC,Yoo JU,Zou D,et al.The role of distraction in improving the space for the cord and never roots in cervical spondylosis[C].Presented at the North American Spine Society conference,Keystone,Clolrado,August,1991.
