Type | Cortex contact + screw fixation | Cortex contact | Screw fixation | Control | P |
---|---|---|---|---|---|
Humerus height, H (mm) | 285 ± 3 | 282 ± 4 | 286 ± 4 | 284 ± 2 | 1 |
Head and neck, φ (mm) | 53.0 ± 0.2 | 53.0 ± 0.3 | 53.0 ± 0.4 | 53.0 ± 0.2 | 1 |
Load, P (N) | 500 | 500 | 500 | 500 | 1 |
Frequency (Hz) | 10 | 10 | 10 | 10 | 1 |
Cycles (N) | 6682 ± 401 | 4338 ± 263 | 3801 ± 230 | 2402 ± 172 | < 0.01 |
Destruction morphology | Fracture line rupture | Re-fracture | Slight bending of calcar screw | Severe rupture and break | N/A |