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Mean MB depth on 15° approach, and the 50th, 75th, and 90th percentile for MB depth at each vertebral level.
| Vertebral Level | MB depth at 15° Angulation (mm) |
|||
|---|---|---|---|---|
| Mean (CI) |
By Percentile |
|||
| 50th/Median | 75th | 90th | ||
| L2 | 64.4 (62.4–66.5) | 63.0 | 72.7 | 85.7 |
| L3 | 72.0 (69.7–74.3) | 69.1 | 80.8 | 96.2 |
| L4 | 79.2 (76.9–81.6) | 77.7 | 90.5 | 104.5 |
| L5 | 79.1 (76.7–81.5) | 76.7 | 90.1 | 105.0 |
