Table 2.
Comparison of clinical outcomes between the two groups
| Structural bone graft (N = 51) | Non-structural bone graft (N = 54) | P Value | |
|---|---|---|---|
| Operation time (min) a | 209.7 ± 31.9 | 175.8 ± 33.8 | 0.000 |
| Intraoperative blood loss (ml) a | 552.9 ± 198.3 | 340.7 ± 122.1 | 0.000 |
| Hospital stay (d) a | 15.0 ± 2.8 | 15.7 ± 2.9 | 0.213 |
| Preoperative VAS a | 6.0 ± 1.6 | 5.8 ± 1.7 | 0.421 |
| Last follow up VAS b | 1 (0–5) | 1 (0–4) | 0.568 |
| Preoperative ODI a | 45.1 ± 14.9 | 38.8 ± 16.1 | 0.041 |
| Last follow up ODI a | 16.0 ± 5.8 | 15.0 ± 5.8 | 0.381 |
| Preoperative ESR (mm/h) a | 48.9 ± 14.2 | 41.4 ± 12.7 | 0.005 |
| Last follow up ESR (mm/h) a | 16.4 ± 5.2 | 14.8 ± 5.4 | 0.123 |
| Preoperative CRP (mg/L) a | 26.1 ± 12.6 | 23.9 ± 10.8 | 0.347 |
| Last follow up CRP (mg/L) a | 6.5 ± 3.1 | 7.5 ± 4.3 | 0.163 |
a The normally distributed continuous variables were presented as mean ± standard deviation and compared by independent sample t-test
b The non-normally distributed continuous variables were presented as median (range) and compared by Mann-Whitney U test