What has to happen before a disk can herniate?
some degree of annulus degenerated
What part of the disk herniates?
nucleus pulposus
What causes cauda equina syndrome? Symptoms?
caused by impingement of cuada equina
symptoms: urinary retention, back pain, radicular symptoms, and saddle anesthesia
What are 8 reasons to image low back pain?
>50YO neuro symptoms trauma cancer history IV drugs immunosuppression systemic symptoms night pain (awakens)
How can you tell the difference between spinal cancer and infection on imaging?
cancer spares disks, infection does not
What is spinal stenosis?
degenerative decrease in spinal canal caliber
can have many underlying causes
What is neurogenic claudication?
LE pain on activity
worse with spinal extension