Tag: Cervical instability:

Cervical Instability

  What is Cervical Instability? In this x-ray series,  it demonstrates movement of the vertebral body of C6 on C7.  On Flexion,  the posterior corners of the vertebral bodies line up.  But,  with extension,  there is a 4.3 mm movement of the C6 body posterior (towards the back) to the C7 body.  The accepted criterion for […]