Table 1.
Pfirrmann grading results of all included intervertebral discs.
| Pfirrmann grade | Segmental level | Total | ||
|---|---|---|---|---|
| C7-T1 | T1-T2 | T2-T3 | ||
| I | 17 | 19 | 21 | 57 |
| II | 20 | 21 | 22 | 63 |
| III | 12 | 11 | 18 | 41 |
| IV | 10 | 10 | 6 | 26 |
| V | 8 | 6 | 0 | 14 |
| Total | 67 | 67 | 67 | 201 |
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