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Patient data for three treatment groups
| Parameters | BPS | UPS | UPSFS | P |
|---|---|---|---|---|
| Number of cases | 23 | 22 | 20 | |
| Age (years) | 49.78±10.86 | 48.09±10.62 | 48.00±9.4 | 0.868 |
| Male/female | 10/13 | 11/11 | 11/9 | 0.750 |
| Segment | ||||
| L3-L4 | 6 | 5 | 3 | 0.761 |
| L4-L5 | 7 | 10 | 9 | 0.747 |
| L5-S1 | 10 | 7 | 8 | 0.762 |
BPS=Bilateral pedicle screw, UPS=Unilateral pedicle screw, UPSFS=UPS plus contralateral translaminar facet screw
