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通过新的椎间盘间盘设计,对腰椎段进行有限元生物机械研究

Ashutosh Khanna¹, Pushpdant Jain¹, C P Paul²

¹School of Mechanical Engineering, VIT Bhopal University, Bhopal-Indore Highway, Kothrikalan, Dist. Sehore, Madhya Pradesh 466114, India.

Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia

|June 27, 2025

概括

一种新型的合金人造脊椎间盘 (IVD) 与辅助性核心显示出恢复脊柱生物力学的希望. 这种植入物有效地模仿自然的脊柱运动和机制,为患者特定的脊柱置换提供了潜力.

科学领域:

生物材料工程生物材料工程
脊柱生物力学脊柱生物力学
增材制造增材制造增材制造

背景情况:

激光增材制造使复杂的,针对患者的脊柱植入物成为可能.
椎间盘 (IVD) 替换对于恢复脊柱功能至关重要.
需要新的植入物设计来提高生物相容性和机械合规性.

研究的目的:

为了研究一种具有辅助性细胞核的新型合金人工IVD的生物力学性能.
为了比较新型植入物的机械反应与完整的脊柱和商业植入物.
评估植入物恢复脊柱硬性,服从性和运动范围的能力.

主要方法:

使用DICOM数据集创建了一个经过验证的腰椎有限元素 (FE) 模型.
模拟包括脊柱部件的解剖学准确几何和材料特性.
在各种生理负荷条件和运动下分析了机械反应 (压力,应变,变形,ROM).

主要成果:

新型植入物 (XCEL) 与商业植入物 (SBC) 和完整的脊椎 (ISM) 相比,显示出更好的应力分布和机械弹性.
在扭曲下,XCEL的最大-米塞斯应力为127.45MPa,而SBC的最大-米塞斯应力为191.82MPa.
曲运动范围为XCEL的11°,与完整的脊椎的17.3°非常接近.

结论:

合金人工IVD与辅助核有效地恢复近生理范围的运动和脊柱力学.
植入物的设计,包括辅助性核心和端板曲率,模仿自然的腰椎端板.
这种新型植入物显示出定制,患者特异的脊柱置换和手术前规划的显著临床潜力.

关键词:

人工椎间盘是人造椎间盘.辅助性元材料是一种辅助性元材料.生物力学生物力学在这里,我们可以看到CAD,CAD,CAD.有限元素分析的研究.格子结构的格子结构.腰椎脊柱的腰椎脊柱是指腰椎脊柱的部分.

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