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Comparison of LL before and after operation
| Characteristic | UBE-TLIF (n = 26) | MMIS-TLIF (n = 23) | P value |
|---|---|---|---|
| Preoperation | 45.52 ± 1.69 | 46.19 ± 1.39 | 0.305 |
| Last follow-up | 48.27 ± 1.59 | 48.50 ± 1.19 | – |
| Differentials | 2.75 ± 1.05 | 2.30 ± 1.07 | 0.668 |
| P value | 0.000 | 0.000 |
