The significance of cervical vertebra dynamic MRI for choosing the surgical approach of cervical spondylotic myelopathy

English Keywords:Cervical spondylotic myelopathy  Dynamic state MRI  Surgical operation  Choice

English Abstract:

  【Abstract】 Objective：To understand the guidance effect of cervical vertebra dynamic MRI on the choice of surgical approach and method for the treatment of cervical spondylotic myelopathy（CSM）.Method：26 cases of CSM whose routine MRI showed anterior compression of spinal cord at one or two adjacent segments underwent cervical vertebra dynamic MRI，among them，15 cases presented both anterior and posterior cord compression at multilevel on their cervical vertebral MRI.Such 15 cases received open-door laminoplasty from posterior approach（Hirabayashi），JOA score was assessed at pre- and post-operation and one year after operation respectively，effective rate of the operation was calculated.Result：The post-operative JOA score of these 15 cases was significantly improved compared that of pre-opertion（P<0.05），and the anterior curvature of cervical spine between pre-and post-operation showed no singnificant difference（P＞0.05）.The improvement rate in a year after operation was excellent in 12，good in 2，fair in 1.Conclusion：Dynamic cervical vertebra MRI can objectively indicate the true condition of spinal cord compression，it is helpful to select a right surgical approach and method and get a better outcome.