在腰椎经皮椎间融合术（PLIF）中使用钛与聚醚醚酮（PEEK）的生物力学效应：有限元分析。
The biomechanical effects of Ti versus PEEK used in the PLIF surgery on lumbar spine: a finite element analysis.
机构信息
Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan, China.
National Demonstration Center for Experimental Mechanical Engineering Education, School of Mechanical Engineering, Shandong University, Jinan, China.
出版信息
Comput Methods Biomech Biomed Engin. 2021 Aug;24(10):1115-1124. doi: 10.1080/10255842.2020.1869219. Epub 2021 Jan 11.
Titanium (Ti) and polyetheretherketone (PEEK) are commonly used in posterior lumbar interbody fusion (PLIF). The study investigated biomechanical effects of Ti versus PEEK used as materials of cage and rods on the lumbar spine. Four different configurations of PLIF were constituted. Stiff Ti rods provided satisfactory initial stability but increased the stress on rods significantly under simulated physiological load conditions. Ti cage increased the stress on bone endplates significantly. Materials of cage and rods had insignificant effects on the nucleus pressure and facet joint force of non-instrumented segments. Further clinical studies and follow-up observations are essential for corroborating these findings.
钛（Ti）和聚醚醚酮（PEEK）常用于后路腰椎间融合术（PLIF）。本研究调查了作为 cage 和 rods 材料的 Ti 与 PEEK 在腰椎上的生物力学效应。构成了四种不同的 PLIF 配置。刚性 Ti 棒提供了满意的初始稳定性，但在模拟生理负荷条件下，显著增加了棒的应力。Ti cage 显著增加了骨终板上的应力。 cage 和 rods 的材料对未器械化节段的核压力和小关节力没有显著影响。进一步的临床研究和随访观察对于证实这些发现是必要的。
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