在下骨骨折中各种固定模式的有限元分析
Tayebeh Tazh1, Siamak Khorramymehr1, Kamran Hassani1,2
1Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Computer methods in biomechanics and biomedical engineering
|March 13, 2025
概括
这项研究发现,更厚的迷你板和解锁螺丝可以减少下骨在下骨折固定过程中对下骨的压力. 然而,更厚的板块会增加螺丝本身的应力.
科学领域:
- 口腔和牙面部外科手术
- 生物材料工程 生物材料工程
- 生物力学 生物力学
背景情况:
- 骨折是严重的面伤害,在诊断,分类和管理方面仍在进行辩论.
- 迷你板固定系统是治疗下骨折的标准,研究了各种锁定系统.
- 板厚对解锁螺丝机制和锁/解锁螺丝的应力度的影响尚不清楚.
研究的目的:
- 调查板厚和锁定机制对下骨折的迷你板固定系统性能的影响.
- 分析不同固定配置下的螺丝和板内的应力度.
- 开发一个精确的有限元模型,考虑到骨厚度和粘弹性特性.
主要方法:
- 使用有限元分析 (FEA) 来建模下固定.
- 模拟评估了不同板厚和螺杆锁定机制 (锁定与解锁) 的影响.
- 分析了与年龄和生活方式相关的骨密度,以预测裂传播和定制固定.
主要成果:
- 锁定螺丝机制降低了·米塞斯在口腔和舌头骨区域的压力.
- 增加的板厚减少了骨压力和最大压力.
- 与锁定螺丝相比,解锁螺丝在板和螺丝上表现出较低的应力和位移.
- 较厚的板材减少了板材应力,但增加了螺丝应力.
结论:
- 锁定螺丝机制可以减少骨压力,提高固定稳定性.
- 解锁螺丝和增加板厚可以减轻对骨的压力.
- 板块厚度会影响应力分布,更厚的板块可能会过载螺丝.
- FEA建模提供了一种精确的方法,可以根据个体骨特征优化下关节固定.
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