To explore the relationship between cervical curve depth change of cervical spondylotic radiculopathy and cure effect before and after treatment.

It is of great importance for surgery efficacy and avoidance of complications to reconstruct cervical curve, intervertebral height and cervical stability.

The three force system of the spine and fixed to play the role of traction, so that the spine flexible and flexibility, so that people can do the normal cervical curve, thoracic curve, lumbar curve.