| Phantom model | In vivo shoulder model | ||||||
---|---|---|---|---|---|---|---|---|
Center distance (mm) | Block angle (°) | Average contact strain (%) | Contact area ratio (%) | |||||
Bias | Precision | Bias | Precision | Bias | Precision | Bias | Precision | |
Position 1 (Angle: 0°) | 0.006 | +  0.089 – 0.089 | 0.049 | +  0.133 – 0.133 | 0.066 | – 0.484 +  0.575 | 0.048 | – 1.020 +  0.947 |
Position 2 (Angle: 30°) | – 0.023 | +  0.056 – 0.056 | – 0.692 | +  0.126 – 0.126 | – 0.138 | – 0.425 +  0.465 | – 0.308 | – 0.850 +  0.758 |
Position 3 (Angle: 60°) | – 0.050 | +  0.084 – 0.084 | 0.027 | +  0.136 – 0.136 | – 0.349 | – 0.604 +  0.696 | – 0.570 | – 0.929 +  0.997 |