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Operation time, blood loss and complication
| SMA group (n = 14) | Traditional group (n = 16) | P | |
|---|---|---|---|
| Operation time (m) | 284 ± 53 | 324 ± 41 | 0.027* |
| Blood loss (ml) | 585 ± 188 | 778 ± 285 | 0.040* |
| Complication | Deep infection | Screws pulling out, loosen; replace mono-axial screws with multi-axial screws | |
* Statistically significant if P < 0.05
