1. Degeneration: assign a value 0 to 3 at each level |
None |
0 |
|
Dark disc on T2 MRI |
1 |
|
End plate edema on T2 MRI |
2 |
|
End plate sclerosis |
3 |
|
|
|
|
2. Height loss: assign a value 0 to 3 at each level |
None |
0 |
|
Yes, < 50% |
1 |
|
Yes, > 50%, but not ankylosis |
2 |
|
Yes, ankylosis |
3 |
|
|
|
|
3. Osteophytes: assign a value 0 to 3 at each level |
None |
0 |
|
Yes, < 2 mm |
1 |
|
Yes, > 2 mm but not bridging |
2 |
|
Yes, bridging |
3 |
|
|
|
|
4. Herniation: assign a value 0 to 4 at each level |
None |
0 |
|
Bulge |
1 |
|
Protrusion |
2 |
|
Extrusion |
3 |
|
Sequestered |
4 |
|
|
|
|
5. Stenosis: assign the total score 0 to 6 for each level |
Right foramen |
0 or 1 |
Value for stenosis is the sum of these components or 6 if there is complete block. |
Left foramen |
0 or 1 |
|
Right lateral recess |
0 or 1 |
|
Left lateral recess |
0 or 1 |
|
Central stenosis |
0 or 1 |
|
Complete block |
6 |
|
|
|
|
6. Listhesis: assign a value 0 to 5 for each level |
None, <10% |
0 |
|
Grade 1, 10 to 25% |
1 |
|
Grade 2, 26 to 50% |
2 |
|
Grade 3, 51 to 75% |
3 |
|
Grade 4, 76 to 100% |
4 |
|
Grade 5, > 100% |
5 |
|
|
|
|
7. Instability: assign an instability score 0 to 3 for each level |
No instability |
0 |
|
Mild instability |
1 |
|
Moderate instability |
2 |
|
Severe instability |
3 |
|
|
|
|
8. Scoliosis and 9. Kyphosis: specify total magnitude 0 to 6 for each patient |
<10 degrees |
0 |
|
11 to 19 degrees |
1 |
|
20 to 29 degrees |
2 |
|
30 to 39 degrees |
3 |
|
40 to 49 degrees |
4 |
|
50 to 59 degrees |
5 |
|
> 60 degrees |
6 |
|