Table 1.
Comparison of patient demographics.
| TPTD group | Non-TPTD group | p value | |
|---|---|---|---|
| Number of patients (n) | 23 | 50 | |
| Age at surgery, mean ± SD (year) | 77.1 ± 6.3 | 77.9 ± 5.8 | 0.64 |
| Sex (man/woman) | 5/18 | 13/37 | 0.78 |
| Fractured vertebra (n) | 0.99 | ||
| Th10 | 1 | 2 | |
| Th11 | 1 | 3 | |
| Th12 | 11 | 26 | |
| L1 | 7 | 14 | |
| L2 | 3 | 5 | |
| BMD of the femur, mean ± SD (g/cm2) | 0.69 ± 0.12 | 0.70 ± 0.15 | 0.90 |
| Existing vertebral fracture (Fx/no Fx) | 14/9 | 26/24 | 0.48 |
| Number of fused segments, mean ± SD (segment) | 4.3 ± 1.3 | 3.7 ± 1.2 | 0.07 |
| Follow-up period, mean ± SD (month) | 37.8 ± 19.5 | 44.5 ± 23.4 | 0.27 |
| JOABPEQ, median (IQR: 25–75%) | |||
| Low back pain | 42.9 (28.6–71.4) | 28.6 (14.3–42.9) | 0.06 |
| Lumbar function | 0.0 (0.0–66.7) | 8.3 (0.0–45.8) | 0.85 |
| Walking ability | 21.4 (14.3–50.0) | 14.3 (0.0–32.1) | 0.23 |
| Social life function | 25.7 (0.0–43.2) | 14.9 (0.0–37.8) | 0.74 |
| Mental health | 29.1 (13.6–58.3) | 32.0 (16.0–41.3) | 0.44 |
SD standard deviation, IQR interquartile range, BMD bone mineral density, Fx fracture, JOABPEQ Japanese Orthopaedic Association Back Pain Evaluation Questionnaire.