Synonyms… Posterior vertebral alignment line, posterior body line.
The posterior body surfaces are connected with a continuous line which traverses across the intervertebral disc. A straight line cannot be drawn due to the concavity of the posterior surface of the vertebral bodies. The key landmarks are the alignment of the superior and inferior posterior body corners noted on the lateral view of the cervical spine. The drawing of the line approximates the anatomical location of the posterior longitudinal ligament. A break in the smoothness of the line is a radiological indication of spinal instability due to fracture, dislocation, ligamentous laxity, or degenerative joint disease.
If you have any questions, please contact me, Dr. Deborah Pearson, a chiropractor serving Alpharetta, Johns Creek, and Roswell.