Investigation of contact behavior on a model of the dual-mobility artificial hip joint for Asians in different inner liner thicknesses

Figure 1  New dual-mobility artificial hip joint concept for Asians.

Figure 2  Mesh model.

Figure 3  Convergence test.

Figure 4 The DM hip joint reference frame. AP: Anterior-Posterior; IER: Internal-External Rotation; PD: Proximal-Distal; FE: Flexion-Extension; ML: Medial-Lateral; AA: Adduction- Abduction.

Figure 5 Hip loads during normal walking cycles, reproduced from[42]. AP: Anterior-Posterior; PD: Proximal-Distal; ML: Medial-Lateral.

Figure 6  Finite element model verification.

Figure 7 Maximum contact pressures based on gait cycles. A: 28 mm head diameter; B: 36 mm head diameter.

Figure 8 The average increase in contact pressures. A: 28 mm head diameter; B: 36 mm head diameter.

Figure 9 Visualization of contact pressures. A: 28 mm head; B: 36 mm head.

Figure 10  Von mises stress. A: 28 mm head diameter; B: 36 mm head diameter.