Biomechanical Evaluation of the Modified Cannulated Screws Fixation of Unstable Femoral Neck Fracture with Comminuted Posteromedial Cortex

Table 1

The results of A-P and axial stiffness, load to failure, and axial displacement were showed as mean± standard deviation.

	Group A	Group B	Group C
A-P stiffness [N/mm]	48.235±5.081	40.237±2.010	48.113±3.327
Axial stiffness [N/mm]	114.463±7.112	77.239±13.231	103.813±15.342
Load to failure [N]	1422.968±110.587	1010.918±76.019	1364.580±88.389
Axial displacement [mm]	1.785±0.462	4.857±0.745	2.859±0.830