Table 2.
Perioperative parameters and fusion rates among three groups
| Parameters | BPS | UPS | UPSFS |
|---|---|---|---|
| Blood loss (ml) | 232.17±95.30 | 158.18±89.12# | 147.75±86.70#,* |
| Operation time (min) | 141.83±21.87 | 106.45±17.30# | 120.50±20.28#,* |
| Fusion rate | 22/23 | 20/22 | 19/20 |
| Complication | |||
| Screw/rod failure | 1/23 | 2/22 | 1/20 |
Data are presented as mean±SD or number. *Represents no significant difference compared with the UPS group (P>0.05), #Represents a significant difference compared with the BPS group (P<0.05). BPS=Bilateral pedicle screw, UPS=Unilateral pedicle screw, UPSFS=UPS plus contralateral translaminar facet screw, SD=Standard deviation