Table 2.
Comparison between the stiffness of the osteosyntheses with the 2C classical configuration (2C) and the configuration with a third nail from lateral (3E). Lower changes in shifting tests = higher stiffness
| 2C classical (2C) | Third nail from lateral (3E) | P value | |
|---|---|---|---|
| (n = 8) | (n = 8) | ||
| Mean (SD) four-point bending (Nm/mm) | |||
| Anterior-posterior | 0.52 (0.49) | 1.04 (0.37) | <0.001 |
| Posterior-anterior | 0.43 (0.11) | 0.85 (0.30) | <0.001 |
| Lateral-medial | 0.70 (0.16) | 1.26 (0.54) | <0.001 |
| Medial-lateral | 0.76 (0.27) | 1.16 (0.33) | <0.001 |
| Mean (SD) rotation (Nm/°) | |||
| External rotation | 0.12 (0.04) | 0.14 (0.02) | <0.01a |
| Internal rotation | 0.11 (0.03) | 0.16 (0.04) | 0.001 |
| Mean (SD) 9° compression/shifting (mm) | |||
| Shifting 9° trochanter major | 0.80 (0.65) | 1.14 (1.41) | 0.98 |
| Shifting 9° crista intertrochanterica | 4.56 (2.67) | 4.97 (2.89) | 0.69 |
aAdjusting the results with the Holm-Bonferroni method, the significance of the differences could not be confirmed