Table 2.
Segmental distribution of posterior and posterolateral annular HIZ on lumbar MR images (n = 238 discs)
| Disk level | Lumbar disk with HIZ | |
|---|---|---|
| n | Percentage (%) | |
| L1/2 | 7 | 2.9 |
| L2/3 | 10 | 4.2 |
| L3/4 | 40 | 16.8 |
| L4/5 | 106 | 44.6 |
| L5/S1 | 75 | 31.5 |
| Total | 238 | 100.0 |
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