Static Loading (Push-Out and Torque)
- Testing in 5pcf (osteoporotic) synthetic bone
- Peak load and failure profile of DHS lag screw versus X-Bolt
- Note the sudden drop in fixation strength with DHS screw fixation versus the sustained ability of the X-Bolt to resist throughout the displacement, due to its 75% greater frontal load area
- Peak Load (push-out) 25% greater with X-Bolt
- Peak Torque (clockwise) 425% greater with X-Bolt
| DHS screw | X-BOLT | % Difference | Significance | |
|---|---|---|---|---|
| No. of specimens | 8 | 8 | ||
| Push-Out (N) | 381 (± 22) | 475 (± 25) | 25% | p<0.01 |
| Torque (Nm) | 0.97 (± 0.22) | 5.09 (± 0.30) | 425% | p<0.001 |
