Table 1.
Anterior, middle and posterior vertebral body heights on lateral X-ray
| Median vertebral body height on lateral X-ray | Pre-kyphoplasty (mm) | First post-kyphoplasty day (mm) | 12-month post-kyphoplasty (mm) | Percentage increase over pre-kyphoplasty vertebral body height (%) | Percentage increase over estimated pre-fracture vertebral body height (%) |
|---|---|---|---|---|---|
| Anterior | 13.5 | 21.1 | 20.8 | 51.25 | 23.16 |
| IQR | 9.8–18.7 | 16.8–24.2 | 16.5–23.5 | 17.21–93.22 | 11.93–36.52 |
| Min/max | 7.8/20.2 | 12.2/30.2 | 12.1/29.9 | 14.66/230.21 | 8.29/66.94 |
| Middle | 11.6 | 18.2 | 18.1 | 52.29 | 28.73 |
| IQR | 7.7–14.4 | 15.5–21.3 | 15.4–20.8 | 26.50–126.17 | 16.31–45.74 |
| Min/max | 6.9/20.1 | 12.0/28.9 | 12.0/28.7 | 22.90/300.91 | 11.62/68.86 |
| Posterior | 25.6 | 28.2 | 28.1 | 9.84 | 8.85 |
| IQR | 22.4–28.6 | 26.2–31.1 | 26.1–31.1 | 4.94–19.26 | 4.94–16.37 |
| Min/max | 20.2/33.9 | 24.1/36.5 | 24.1/36.5 | 2.52/53.88 | 1.42/23.44 |
IQR inter-quartile range, Min/max minimum/maximum values
All vertebral body height increases were statistically significant (P < 0.001)