Table 1 Values of bone and tumor knee prosthesis components
Material | Elasticity(MPa) | Poisson’s ratio | Fatigue resistance(MPa) |
|---|---|---|---|
Ti-6Al-4 V alloy | 110,000 | 0.30 | Yield strength 1010; tensile strength 1080 |
Vitallium | 210,000 | 0.30 | Yield strength 574; tensile strength 736 |
Cortical bone | 13,700 | 0.30 | Compressive strength 55; tensile strength 124 |
Cancellous bone | 1850 | 0.30 | |
Bone cement | 2070 | 0.35 | Yield strength 44; compressive strength 67 |
Polyethylene | 1070 | 0.41 | Yield strength 21; tensile strength 34 |