History of halo for cervical instability after injury. Evaluate C1-C2 alignment, evaluate for changes. There is faint residual focal T2 hyperintensity within the spinal cord at the level of the dens. There is slight widening of the atlanto-dens interval, measuring up to 6 mm, where there also appears to be a small effusion. There is also slight asymmetry in distance between the lateral masses of C1and odontoid process, without evidence of rotatory subluxation. The vertebral column alignment is straightened in the sagittal plane. The vertebral body and disc space heights are preserved. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis. The paravertebral soft tissues are unremarkable.
Faint residual spinal cord contusion at the level of the dens and slight widening of the atlanto-dens interval. Evaluation for dynamic instability is otherwise limited without flexion and extension scans.