Table 3.
Histologic evaluation parameters for the intervertebral disc
| Parameters | Grade | Description |
|---|---|---|
| Clefts in the NP | 0 | Absent |
| 1 | Rarely present | |
| 2 | Intermediately present | |
| 3 | Abundantly present | |
| Tears in AF | 0 | Absent |
| 1 | Rarely present | |
| 2 | Intermediately present | |
| 3 | Abundantly present | |
| Granular changes | 0 | Absent |
| 1 | Rarely present | |
| 2 | Intermediately present | |
| 3 | Abundantly present | |
| Mucous degeneration | 0 | Absent |
| 1 | Rarely present | |
| 2 | Intermediately present | |
| 3 | Abundantly present | |
| Cell clustering | 0 | No proliferation |
| 1 | Mild | |
| 2 | Moderate | |
| 3 | Severe |