Table 2 Preoperative demographic and clinical characteristics according to whether osteoporosis medication was BP or TP
| Â | BP | TP | p-value |
|---|---|---|---|
Cases, n | 104 | 55 | – |
Age at surgery, years | 75.2 ± 6.8 | 76.4 ± 6.4 | 0.46 |
Sex (female) | 89 (85.6%) | 47 (85.5%) | 0.98 |
BMI | 22.2 ± 4.8 | 22.6 ± 5.7 | 0.62 |
Smoking history | 14 (13.5%) | 6 (10.9%) | 0.64 |
Number of previous vertebral fractures | 0.4 ± 0.89 | 0.6 ± 1.0 | 0.20 |
Number of new vertebral fracture | 1.0 ± 0.2 | 1.1 ± 0.3 | 0.13 |
Time from injury to surgery (days) | 183 ± 275 | 152 ± 154 | 0.44 |
BMD, YAM% | 72.5 ± 17.7 | 73.0 ± 13.9 | 0.87 |
Preoperative drug use for osteoporosis | 38 (36.5%) | 33 (60.0%) | 0.007 |
 BP | 32 (30.8%) | 23 (41.8%) | 0.22 |
 Vit D | 7 (6.7%) | 7 (12.7%) | 0.24 |
 TP | 0 | 7 (12.7%) | < 0.001 |
Number of fixed levels | 3.0 ± 0.8 | 3.2 ± 0.8 | 0.21 |
Preoperative JOA score | 4.8 ± 3.6 | 4.1 ± 3.3 | 0.15 |
Preoperative VAS (back pain) | 71.2 ± 22.9 | 74.6 ± 27.1 | 0.25 |
Preoperative VAS (leg pain or numbness) | 53.1 ± 31.6 | 58.4 ± 32.9 | 0.36 |