Diagnosis:
Clinical +electrophysiology or CT myelogram:
- Trauama, flaccid paralysis, areflexia
NCS/EMG:
- Fibrillation & positive sharp waves PSW in paraspinous muscles
- SNAP: Normal conduction velocity in affected area (i.e. preganglionic)
- SSEP: Absent cortical response in affected segment
CT myelogram:
- Avulsed nerve roots