Table 1.
Baseline patient characteristics and radiographic measurements
| Characteristic | RC group (n=28) | NC group (n=106) | p-value |
|---|---|---|---|
| Patients’ characteristics | |||
| Age (yr) | 79.4±7.8 | 77.5±8.6 | 0.312 |
| Gender | 0.103 | ||
| Male | 2 | 23 | |
| Female | 26 | 83 | |
| Body mass index (kg/m2) | 24.1±3.9 | 22.7±3.9 | 0.079 |
| Bone mineral density (T-score) | −3.9±0.9 | −2.8±0.7 | 0.000* |
| Previous osteoporotic vertebral fracture | 14 (50) | 19 (18) | 0.001* |
| Average time to recollapse (mo) | 3.2 (1.2–25.1) | - | - |
| Radiographic measurements | |||
| Degrees of mobility (°) | 6.3±5.2 | 2.6±1.8 | 0.000* |
| Intravertebral vacuum cleft | 17 (61) | 30 (28) | 0.002* |
| Sagittal imbalance | 20 (71) | 10 (9) | 0.000* |
| Local Cobbs angle (°) | 14.3±8.1 | 15.4±6.5 | 0.183 |
| Thoracolumbar kyphosis angle (°) | 33.6±10.8 | 21.7±14.2 | 0.002* |
| Sagittal vertical axis (mm) | 10.8±5.8 | 2.1±1.8 | 0.021* |
| Adjacent vertebral fractures | 13 (46) | 11 (10) | 0.000* |
| Intervertebral disc cement leakage | 7 (25) | 20 (19) | 0.596 |
| Restoration ratio | 0.20±0.21 | 0.16±0.17 | 0.417 |
| Average amount of cement injected (mL) | 4.2 (3.0–6.5) | 4.1 (2.8–5.5) | 0.782 |
Values are presented as mean±standard deviation, number of patients (%), or mean (range), unless otherwise stated.
RC group, recollapsed group; NC group, noncollapsed group.
*
p<0.05 (using an independent-sample Student t-test and chi-square test).