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International Journal of Bioprinting Macro and micro structure of a 3D-printed implant

the ability to allow potential for knee joint replacement. region near the implant cortical bone, which corresponded
Subsequently, a topology optimization was performed on to the physiological tibia load conditions. This observation
this 12° wedge-shaped spacer based on the crescent cross- was closely related to the force distribution in the tibial
sectional profile. plateau, as the tibial plateau posterior region bears
approximately 44.6% of the overall load. Additionally, the
The optimization analysis result indicated that the cortical bone region material has higher Young’s modulus
structural volume should be preserved in the posterior end than trabecular bone, serving as the primary load-bearing

Figure 8. Fracture patterns of all samples after biomechanical fatigue test for (a) optimal wedge-shaped spacer (OWS) and (b) T-shaped plate (TP) systems.

Volume 10 Issue 1 (2024) 502 https://doi.org/10.36922/ijb.1584