使用有限元分析对不同半刚性结点固定技术的生物力学评估
Julia L van Agtmaal1, Remco J P Doodkorte2, Alex K Roth2
1Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Den Dolech 2, 5612AZ Eindhoven, the Netherlands; Department of Orthopaedic Surgery, Research School CAPHRI, Maastricht University Medical Center, P. Debyelaan 25, 6229HX Maastricht, the Netherlands.
Clinical biomechanics (Bristol, Avon)
|August 19, 2023
概括
半刚性脊柱固定技术可以通过减少应力来减少近端结合失败. 不同的方法对带力和磁盘应力产生不同的影响,需要进行临床试验以验证.
科学领域:
- 脊柱生物力学 脊柱生物力学
- 整形外科手术 整形外科手术
- 有限元素分析的研究.
背景情况:
- 靠近关节衰竭 (PJF) 是成年脊柱形硬脊柱仪器的常见并发症.
- 半刚性固定旨在通过创建渐进的运动过渡范围来减少接口应力.
- 这项研究评估了半刚性结点固定技术的生物力学影响.
研究的目的:
- 研究各种半刚性结点固定技术的生物力学影响.
- 将这些技术与传统的脚螺丝固定相比较.
- 评估它们在缓解近端结点故障方面的潜力.
主要方法:
- 开发了一个T8-L3有限元脊柱模型.
- 模拟了椎间盘退化.
- 半刚性技术 (子,带,结带) 被模拟为近距离的脚螺丝固定.
- 后部带复合力和核脉应力被量化.
主要成果:
- 所有经过测试的半刚性技术,与脚螺丝固定相比,减少了后部带复杂力的作用.
- 横向的工艺和结结的带减少了核脉的应力.
- 然而,紧紧的带增加了结合区的核脉应力.
结论:
- 半刚性固定的生物力学效应是复杂的,并且依赖于技术.
- 需要进行进一步的临床研究,以确定这些方法在降低近接节失效率方面的有效性.
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