The current study investigates the biomechanical performance of porous bone plates augmented with three different cellular lattice structures, e.g., body-centered cube (BCC), simple cube (SC), and the superposition of simple and body-centered cube (SC-BCC) structures. The SC-BCC cellular structures, exhibiting improved torsional, compression, and bending stiffness, were strategically integrated into the bone plates. Configurations ranging from one to three rows, with porosity ranging from 30% to 90%. Increasing the number of rows and porosity maximized the interfragmentary movement at the fracture site. Specifically, SC-BCC configurations with one, two and three rows at 90% porosity demonstrated callus volume improvements of 31.33%, 42%, and 43.2%, respectively, compared with the lowest callus volume observed with SC-BCC at one row and 30% porosity. Regardless of the improved volume, callus stiffness was highest at 30% and 90% porosity levels across all cases, indicating more mature tissue formation in calluses and better physiological load support. High stresses located at 90% porosity, followed by 50% porosity, discouraged their mechanical performance. Therefore, employing 30% porosity configurations with appropriate vertical rows for desired movement is recommended for optimal biomechanical performance. However, 90% porosity may be suitable in scenarios involving minimal forces and restricted patient movement.

中文翻译：

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Ti-6Al-4V多孔接骨板治疗下肢骨折的计算生物力学分析

目前的研究研究了用三种不同的细胞晶格结构增强的多孔骨板的生物力学性能，例如体心立方体（BCC）、简单立方体（SC）以及简单和体心立方体的叠加（SC-BCC）结构。 SC-BCC 细胞结构具有改善的扭转、压缩和弯曲刚度，被策略性地集成到骨板中。配置范围为一排至三排，孔隙率范围为 30% 至 90%。增加行数和孔隙率可以最大化骨折部位的碎片间运动。具体而言，与单排和 30 排 SC-BCC 观察到的最低愈伤组织体积相比，具有 90% 孔隙率的一排、两排和三排的 SC-BCC 配置显示愈伤组织体积分别提高了 31.33%、42% 和 43.2% ％孔隙率。无论体积如何改善，在所有情况下，愈伤组织刚度在 30% 和 90% 孔隙率水平下最高，表明愈伤组织中形成了更成熟的组织，并且具有更好的生理负荷支撑。孔隙率 90% 处的高应力，其次是孔隙率 50% 的应力，降低了它们的机械性能。因此，建议采用 30% 的孔隙率配置和适当的垂直行来实现所需的运动，以获得最佳的生物力学性能。然而，90% 的孔隙率可能适合涉及最小力和限制患者运动的情况。