Parts | Specification | Element size | Material properties |
---|---|---|---|
Patella | 40.1 mm in height, 44.5 mm in width, 19.1 mm in thickness, patellar ridge ratio 6:5 | C3D4, 0.8 mm (0.4 mm in K-wires tunnels) | Based on the gray value distribution of distal femur*, elastic modulus 5–16.3 GPa, Poisson’s ratio 0.3 |
K-wire | 2 mm in diameter | C3D4, 0.4 mm | Elastic modulus 200 GPa, Poisson’s ratio 0.3 |
SS-wire | 1 mm in diameter | C3D4, 0.2 mm | |
Femur | Larger than patellofemoral facet | C3D4, 2 mm | Rigid body |
Cartilage | 3 mm in thickness, cover femur side only | C3D4, 1 mm | Elastic modulus 7 MPa, Poisson’s ratio 0.47 |