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Comparison of degeneration of discs adjacent to vertebral body between preoperatively and at final follow‐up
| Mimura Grade | Upper adjacent disc | Lower adjacent disc | ||
|---|---|---|---|---|
| Preoperative (68 cases) | Final follow‐up (62 cases) | Preoperative (68 cases) | Final follow‐up (62 cases) | |
| 1 | 28 | 45 | ||
| 2 | 40 | 23 | 3 | |
| 3 | 16 | 37 | ||
| 4 | 46 | 22 | ||
χ2 test, upper adjacent discs: χ2= 67.10, ν= 2, P < 0.01; lower adjacent discs: χ2= 119.36, ν= 2, P < 0.01.
