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颈部过屈，过伸Ｘ线片比以往正侧位或左、右斜位片能更好地进行颈椎的动态观察，为诊断无明显椎管狭窄及间盘突出的颈椎病提供依据，方法简单、易行。
Neck flexion, hyperextension X-ray films than in the past is lateral or left and right oblique better dynamic observation of the cervical spine for the diagnosis of non-obvious spinal stenosis and cervical disc herniation provide the basis for the method Simple and easy