FINDINGS: Straightening of the normal cervical lordosis is again demonstrated. Subtle anterolisthesis of C2 is again noted on C3. Alignment is otherwise unremarkable. The central spinal canal appears congenitally narrowed. This is most pronounced from C3
through C5 secondary to developmentally short pedicles.
Postoperative changes of instrumented anterior discectomy and fusion at C6-C7 are again noted.
Marrow signal is remarkable for endplate degenerative signal changes at C5, C6, and C7. Edema within the right-sided C5 and C6 facets is again noted is well.
Limited evaluation of the posterior fossa is unremarkable.
The visualized vertebral arterial segments demonstrate appropriate flow voids.
At C2-C3,the disc, canal, and foramina are unremarkable. There is mild bilateral facet arthropathy.
At C3-C4, broad-based central disc protrusion narrows anterior subarachnoid space with contact and mild effacement of the ventral surface of the cord, further narrowing the central spinal canal. Uncovertebral facet degenerative changes cause mild
bilateral foraminal stenosis.
At C4-C5, moderate-sized central disc protrusion contacts and effaces the ventral surface of the cord, further narrowing the central spinal canal. Neural foramina are patent. Facets are unremarkable.
At C5-C6, broad-based disc bulging narrows the anterior subarachnoid space but does not contact the ventral surface of the cord. Neural foramina are patent. There is mild facet arthropathy.
At C6-C7, postoperative changes of fusion are present. Mild bony ventral ridging persists. Central spinal canal is patent. Neural foramina are grossly patent. Facets are unremarkable.
At C7-T1, there is mild diffuse disc bulging. This does further narrow the central spinal canal. Mild bilateral foraminal narrowing is present left great than right. There is mild left facet arthropathy.
T2 hyperintense signal within the cervical cord are again demonstrated extending from C5 through C7. There is narrowing/volume loss of the cervical cord at the C6 level, similar appearance to the previous examination. No new abnormalities are