Table 1 Patient characteristics
No. of patients | 33 |
Age (years) | 66.9 ± 8.7 |
Female: Male | 27:6 |
Fusion levels | |
One-level fusion | 20 |
Two-level fusion | 10 |
Multi-level fusion(≥3 levels fusion) | 3 |
Slipped level | |
L2/3 | 2 |
L3/4 | 4 |
L4/5 | 30 |
Preoperative slip ratio (%) | 11.1 ± 4.6 |
Average surgical time (minutes) | 199 ± 49 |
Estimated blood loss (ml) | 209 ± 99 |
Indirect decompression with percutaneous pedicle screw fixation | 11 (12 levels) |