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Pre- and postoperative changes in cross-sectional area at the middle disc level with the mean±standard deviation of the length of operating time and hospital stay
| Preoperative (mm2) | Postoperative (mm2) | Percent increase | p-value | |
|---|---|---|---|---|
| Cross-sectional area | 91.3 ± 3.2 | 142.9 ± 3.6 | 56.6% | < 0.001 |
| Operating time (min) | 37.3 ± 23.15 | |||
| Length of hospital stay (day) | 1.38 ± 2.5 |
