Table 3 Performance of the screws in intact and fractured vertebrae: Mean (standard deviation)
Parameter | Fractured vertebrae | Intact vertebrae | % Decrease | P value |
|---|---|---|---|---|
Maximal insertional torque (Nm) | 0.29(0.13) | 0.40(0.15) | 27.5 | 0.001 |
Seating torque in (Nm) | 0.23(0.11) | 0.28(0.13) | 17.9 | 0.04 |
Axial pullout strength (N) | 558(305) | 646(266) | 13.7 | 0.06 |