Table 2 Summary of clinical results
Characteristic | Group A | Group B | P value |
|---|---|---|---|
(n = 20) | (n = 20) | ||
Operation time, mean (SD), minutes | 166.5 (69.2) | 232.1 (64.8) | 0.004 |
Blood loss, mean (SD), mL | 120.8 (155.3) | 478.0 (493.9) | < 0.001 |
Transfusion, yes, n (%) | 3 (15) | 6 (30) | 0.2 |
No. of instrumented level, mean (SD) | 5.2 (1.5) | 6.4 (2.3) | 0.06 |
Perioperative complications, yes, n (%) | 2 (10) | 5 (25) | 0.2 |
Epidural hemorrhage | 0 | 2 | |
Massive bleeding (> 1500 ml) | 0 | 1 | |
peritonitis | 0 | 1 | |
Surgical site infection | 0 | 1 | |
Instrumentation failure | 1 | 0 | |
cerebral hemorrhage | 1 | 0 | |
Postoperative modified Frankel category, n (%) | 0.1 | ||
A | 0 | 2 (10) | |
B | 0 | 1 (5) | |
C | 1 (5) | 6 (30) | |
D1 | 2 (10) | 1 (5) | |
D2 | 4 (20) | 1 (5) | |
D3 | 3 (15) | 2 (50) | |
E | 10 (50) | 7 (35) | |
Neurological improvement by at least 1 grade or maintenance of grade E, n (%) | 16 (80) | 13 (65) | 0.09 |
Postoperative Barthel index, mean (SD) | 85.8 (24.3) | 60.3 (39.7) | 0.06 |
Postoperative VAS, mean (SD) | 1.8 (2.6) | 1.4 (1.4) | 0.6 |
Postoperative course, n (%) | |||
Discharge to home | 16 (80) | 9 (45) | 0.02 |
Transfer to hospice | 4 (20) | 6 (30) | 0.4 |
In-hospital death | 0 | 5 (25) | 0.02 |
Additional adjuvant therapy, yes, n (%) | |||
Chemotherapy | 14 (70) | 8 (40) | 0.1 |
Radiotherapy | 14 (70) | 14 (70) | 1.0 |
Bone modifying agent | 18 (90) | 15 (75) | 0.2 |
Local recurrence of paralysis | 5 (25) | 2 (10) | 0.2 |
Revision surgery at local recurrence level | 3 (15) | 0 | 0.1 |