Cervical vertebral pseudosubluxation Incomplete C1 ring Cervical ribs Transitional vertebral anatomy Focal fatty marrow Ectopic kidney Conjoined nerve root Incomplete posterior lumbar elements High thecal sac termination Imaging • Multiplanar MR…
(Left) Coronal graphic shows the normal course of the femoral nerve relative to the psoas muscle and inguinal ligament . The femoral nerve produces multiple peripheral branches to the anterior…
Injury to cord, cranial nerve 12, C1 and C2 roots Incidence of cord injury in OCF very low • Vertebral artery (VA) injury primarily from screw placement (4%) If intraoperative injury…
Tend to be fusiform in shape, without a defined neck (as seen commonly with intracranial aneurysms) Often unrelated to arterial branching sites Clinical Issues • Presenting symptoms include back pain, headache,…
T6-T8, dorsal to spinal cord Epidural fat ≥ 7 mm thick • Lumbar spine: 39-42% L4-L5, surrounding thecal sac • Y-shaped configuration to lumbar thecal sac on axial imaging • Mass effect on…
Blurred, coarse bone trabeculae • Changes of hyperparathyroidism (HPT) Prominent primary trabeculae Resorption of secondary trabeculae Cortical thinning Erosions at entheses, endplates, sacroiliac (SI) joints Brown tumors: Lytic lesion, no matrix,…
DSA demonstration of AVF nidus with enlarged draining veins Unlike spontaneous DAVF (sDAVF), often no cord enlargement/hyperintensity from congestive myelopathy • Angiographic protocol for evaluation of suspected cervical tDAVF includes selective…
(Left) Sagittal graphic shows lumbar disc space infection with vertebral body osteomyelitis with endplate destruction and marrow edema. There are ventral and dorsal abscess collections. (Right) Sagittal T1WI C+ FS…
Anteriorly rotated side wider and closer to odontoid Opposite side smaller and farther from odontoid • Lateral view: ± widened atlantodental interval • Dynamic CT: Should include occiput C1-C2 Initial scan: Maintain…
2nd to 3rd decades • Avoidance of neck flexion can stop progression • Selected patients treated with posterior decompression with duraplasty Diagnostic Checklist • Asymmetric atrophy of lower cervical cord on routine MR…
