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Comparison of disc degeneration grade between the Modic changes (MCs), adjacent, and control groups
| Group | Grade 1/2 | Grade 3 | Grade 4 | Grade 5 |
|---|---|---|---|---|
| MCs group (n = 128) | 0 | 18 | 66 | 44 |
| Adjacent group (n = 128) | 24 | 32 | 37 | 35 |
| Control group (n = 128) | 128 | 0 | 0 | 0 |
