Table 1 Stress and displacement values in supination and pronation
From: Finite element analysis of intraosseous distal radioulnar joint prosthesis
Loading condition | 500 (N.mm) | 1000 (N.mm) | 2000 (N.mm) | 5000 (N.mm) | ||
|---|---|---|---|---|---|---|
Supination | model A | Maximum principal stress (MPa) | 35.00 | 70.30 | 140.8 | 351.9 |
Minimum principal stress (MPa) | -28.88 | -57.71 | -115.2 | -286.2 | ||
Displacement (mm) | 2.35 | 4.38 | 8.80 | 22.27 | ||
model B | Maximum principal stress (MPa) | 80.70 | 152.1 | 294.1 | 722.2 | |
Minimum principal stress (MPa) | -115.3 | -603.0 | -1166 | -2863 | ||
Displacement (mm) | 7.02 | 14.83 | 28.23 | 65.90 | ||
prosthesis | von Mises stress (MPa) | 10.3 | 20.5 | 41.36 | 61.4 | |
screws | von Mises stress (MPa) | 50.12 | 80.3 | 110.0 | 200.1 | |
Pronation | model A | Maximum principal stress (MPa) | 32.83 | 65.0 | 128.9 | 320.1 |
Minimum principal stress (MPa) | -37.59 | -74.92 | -149.2 | -370.3 | ||
Displacement (mm) | 1.47 | 2.66 | 5.20 | 13.10 | ||
model B | Maximum principal stress (MPa) | 40.76 | 79.25 | 276.3 | 384.6 | |
Minimum principal stress (MPa) | -68.97 | -132.1 | -195.2 | -637.2 | ||
Displacement (mm) | 20.92 | 42.0 | 83.0 | 140.2 | ||
prosthesis | von Mises stress (MPa) | 110.2 | 220.13 | 380.7 | 800.1 | |
screws | von Mises stress (MPa) | 90.4 | 180.3 | 360.6 | 800.0 |