Table 5.
Perioperative outcomes for patients in conventional LF and PFL groups
| Conventional LF | PFL | p-value | |
|---|---|---|---|
| Number of patients | 66 | 19 | |
| Number of levels fused (levels) | 2.8±1.2 | 3.0±1.4 | 0.48 |
| Screw fixation method | 0.42 | ||
| CPS | 424 (87.4) | 131 (90.3) | |
| LMS | 61 (12.6) | 14 (9.7) | |
| Total operation time (minutes) | 169.6±60.3 | 223.7±65.9 | 0.01 |
| Operation time/fusion level (minutes/level) | 72.3±35.8 | 90.2±46.9 | 0.08 |
| Estimated blood loss (mL) | 270.2±91.1 | 294.7±62.5 | 0.28 |
| Length of hospital stay (days) | 23.3±17.5 | 23.3±27.1 | 0.99 |
| Non-pathologic fever | 15 (22.7) | 2 (10.5) | 0.34 |
| Perioperative complications | |||
| Wound infection | 5 (7.6) | 0 (0.0) | 0.58 |
| Seroma | 6 (9.1) | 1 (5.3) | 1.00 |
| C5 palsy | 1 (1.5) | 1 (5.3) | 0.39 |
| Screw fracture | 1 (1.5) | 0 (0.0) | 1.00 |
| Restenosis due to trauma | 0 (0.0) | 1 (5.3) | 0.22 |
| Follow-up (months) | 35.2±20.8 | 20.0±9.9 | 0.01 |
Values are presented as mean±standard deviation or number (%). LF : laminectomy and fusion, PFL : posterior floating laminotomy, CPS : cervical pedicle screw, LMS : lateral mass screw