Normal vs. Bilateral Cervical Locked Facets with Complete C6 Spinal Cord Injury
This exhibit compares the normal anatomy of the cervical spine to a spine with bilateral locked facets. Under normal conditions, the cervical vertebrae align with each other to create an unobstructed canal for the spinal cord. Pre-operative conditions show jumping of the C6 vertebra 13mm anteriorly, locking its facets in front of C7. This causes complete obliteration of the C6-7 disc and disruption of the interspinous ligament. Degenerative changes can be seen from C3-7 with moderate to severe spinal stenosis. The spinal cord is stretched forward and flattened by the C7 vertebral body, causing complete spinal cord injury. This results in loss of sensory and motor function below the level C6-7 trauma.