Table 3.
Radiologic outcome.
| STL | FEL | P-value a | |
|---|---|---|---|
| Preoperative LL (°) | 49.5 ± 10.0 | 44.0 ± 9.4 | .023 |
| Postoperative LL (°) | 52.0 ± 10.1 | 51.7 ± 7.3 | .799 |
| LL difference | 2.5 ± 5.3 | 7.7 ± 7.4 | .020 |
| Preoperative SL (°) | 18.6 ± 4.5 | 15.8 ± 4.8 | .046 |
| Postoperative SL (°) | 20.9 ± 5.0 | 17.9 ± 5.4 | .046 |
| SL difference | 2.3 ± 2.9 | 2.1 ± 2.7 | .295 |
| Preoperative DH (mm) | 10.3 ± 2.2 | 9.8 ± 2.6 | .540 |
| Postoperative DH (mm) | 9.8 ± 2.6 | 9.6 ± 2.6 | .604 |
| DH difference | .5 ± 0.9 | .2 ± 0.6 | .076 |
| Facet joint orientation (°) | 39.6 ± 10.7 | 35 ± 10.8 | .358 |
| Facet joint preservation rate (%) | 88.5 ± 7.3 | 93.3 ± 7.5 | .019 |
a
All statistical analyses were performed by Mann–Whitney U test.
All results included in the table were expressed as mean ± standard deviation.
Abbreviations: STL, subtotal laminectomy; FEL, full-endoscopic laminotomy; LL, Lumbar lordosis; SL, Segmental lordosis; DH, Disc height; LL difference = (postoperative LL – preoperative LL); SL difference = (postoperative SL – preoperative SL); DH difference = (preoperative DH – postoperative DH).