Canal Volume Changes in the Subaxial Cervical Spine during In Vivo Dynamic Flexion-Extension

Previous reports have suggested a correlation between canal morphology and clinical symptoms in patients with cervical myelopathy and cervical spinal cord injury. Most quantitative studies on the cervical spinal canal have focused on cross-sectional area and diameter of the canal in a static position. Little is known about canal volume changes in the cervical spine during functional dynamic neck motion.