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M1 in the upper endplate in relation to the change of disc signal intensity after 1-year follow-up
| Presence/change of M1 | Presence/change of disc signal intensity | ||||
|---|---|---|---|---|---|
| Constantly normal | Constantly decreased | Further decreased | Increased | Total (n) | |
| no M1 | 44 | 163 | 1 | 1 | 209 |
| M1 constant | 0 | 4 | 0 | 1 | 5 |
| M1 increased/appeared | 0 | 18 | 1 | 9 | 28 |
| M1 decreased/disappeared | 0 | 12 | 8 | 8 | 28 |
| Total (n) | 44 | 197 | 10 | 19 | 270 |
M1 Modic 1 type change
p < 0.001 Pearson chi-sq
