Table 1.
Demographic characteristics and bone density
| Subsidence group (n = 17) | Non-subsidence group (n = 54) | P value | |
|---|---|---|---|
| Age (y) | 59.2 ± 9.8 | 59.9 ± 10.9 | 0.873 |
| Gender ratio (male:female) | 7:10 | 24:30 | 0.927 |
| Smoking (yes/no) | 3:14 | 9:45 | 0.965 |
| Follow-up time (m) | 12.3 ± 5.8 | 12.7 ± 4.6 | 0.591 |
| BMI (kg/m2): | 26.0 ± 5.4 | 25.6 ± 2.7 | 0.842 |
| Spine BMD (g/cm2) | 0.845 ± 0.147 | 0.885 ± 0.168 | 0.535 |
| Spinal T-score: | −1.8 ± 1.3 | −1.6 + 1.1 | 0.476 |
| Forearm BMD (g/cm2) | 0.284 ± 0.662 | 0.429 ± 0.956 | <0.001 |
| Forearm T-score | −2.7 ± 1.1 | −1.2 ± 1.2 | <0.001 |
| Mean global HU value | 96.1 ± 45.0 | 132.7 ± 40.2 | 0.015 |
| Operated segment HU value | 96.7 ± 55.2 | 129.0 ± 42.2 | 0.038 |
| Upper vertebrae of operated segment HU value | 94.4 ± 44.6 | 129.6 ± 40.7 | 0.029 |
| Lower vertebrae of operated segment HU value | 98.5 ± 55.9 | 130.1 ± 44.4 | 0.033 |