Benner classification of arachnoiditis (1978):
0. Extradural compression (spondylosis/stenosis)
1. Local post-operative changes
2. Arachnoiditis at a single level
3. Arachnoiditis at multiple levels
4. Myelographic block secondary to arachnoiditis
5. Arachnoiditis progressive or ascending greater than 2 levels above operative site.
The radiologists classify arachnoiditis according to Delamarter's MRI classification:
Type I: central clumping of nerve roots
Type II: peripheral adhesion of nerve roots to the theca ("empty sac")
Type III: complete opacification of the thecal sac, extending over at least one vertebral level
Aldrete describes:
Class I: nerve root sleeves alone
Class II: extends to involve subarachnoid space
| < Prev | Next > |
|---|
