Table 2.
Comparison of parameters in two groups
| Risk factor | Non-failure (n=109) | Failure (n=15) | p-value* |
|---|---|---|---|
| Sex | 0.692 | ||
| Female | 45 (41.3) | 7 (46.7) | |
| Male | 64 (58.7) | 8 (53.3) | |
| Age (years) | 57.57±11.91 | 56.13±10.16 | 0.657 |
| Tomita | 6.98±2.35 | 6.73±1.58 | 0.599 |
| Preoperative adjuvant treatment | 67 (61.5) | 8 (53.3) | 0.546 |
| Preoperative spinal radiotherapy | 35 (32.1) | 6 (40.0) | 0.567 |
| Number of metastasis vertebrae | 3.56±3.88 | 4.60±7.28 | 0.595 |
| Number of fixed vertebrae | 3.39±1.27 | 3.33±1.23 | 0.873 |
| Use of bone graft | 54 (49.5) | 8 (53.3) | 0.783 |
| Postoperative adjuvant treatment | 91 (83.5) | 14 (93.3) | 0.464 |
| Postoperative spinal radiotherapy | 66 (60.6) | 13 (86.7) | 0.049 |
| Tumor | 0.799 | ||
| Kidney | 9 (8.3) | 0 (0.0) | |
| Liver | 20 (18.3) | 2 (13.3) | |
| Lung | 27 (24.8) | 5 (33.3) | |
| Others | 53 (48.6) | 8 (53.3) | |
| Extra bone meta | 68 (62.4) | 10 (66.7) | 0.748 |
| ASIA grade | 0.164 | ||
| A | 1 (0.9) | 0 (0.0) | |
| B | 2 (1.8) | 0 (0.0) | |
| C | 12 (11.0) | 5 (33.3) | |
| D | 52 (47.7) | 4 (26.7) | |
| E | 42 (38.5) | 6 (40.0) | |
| Approach | 0.391 | ||
| Doral | 31 (28.4) | 6 (40.0) | |
| Ventral | 54 (49.5) | 8 (53.3) | |
| Doral+ventral | 24 (22.0) | 1 (6.7) | |
| Corpectomy verterae | 0.550 | ||
| C | 42 (38.5) | 4 (26.7) | |
| T | 47 (43.1) | 7 (46.7) | |
| L | 20 (18.3) | 4 (26.7) | |
| Survival time (days) | 385±565.9 | 941±1486.8 | 0.173 |
| Ambulatory | 84 (77.1) | 9 (60.0) | 0.201 |
| Bone mineral deinsity | -0.88±1.26 | -0.56±0.99 | 0.367 |
| Use of steroid (yes) | 76 (69.7) | 10 (66.7) | 0.774 |
| Fixation in osteolytic vertebrae (yes) | 52 (47.7) | 9 (64.3) | 0.243 |
Values are presented as mean±standard deviation or number (%).
*
p<0.05. ASIA : American Spinal Injury Association, C : cervical spine, T : thoracic spine, L : lumbar spine