本研究采用熔融沉积3D打印技术，设计并制作了具有一致孔隙率的四方、六方和车轮状结构的PLA支架。根据理论模拟和实验的压缩测试、蠕变粘弹性试验和应力松弛试验以及循环加载疲劳试验的表征，我们的结果表明，3D打印四方模型的PLA支架具有最好的力学性能。

 3D-printed PLA scaffolds with tetragonal, hexagonal and wheel-like structures were designed and fabricated via a computer-assisted FDM technology under a consistent porosity. According to the characterization of theoretical and experimental compressive tests, the viscoelasticity experiments of creep and stress relaxation behaviors, and the cyclicloading fatigue examinations, our results illustrated that the 3D-printed PLA scaffold with the tetragonal structure had the best mechanical behaviors.