额外的螺丝和杆固定在子加载过程中额外的螺丝和杆固定在子加载过程中的作用斜侧侧体间融合:有限元分析
Yu-Hsuan Chung1,2,3, Ming-Hsien Hu1,4, Hong-Lin Su2,3,5,6
1Department of Orthopedics, Show Chwan Memorial Hospital, Changhua 500, Taiwan.
Journal of clinical medicine
|March 27, 2025
概括
将侧固定添加到斜腰间体融合 (OLIF) 中,可以显著降低子负荷和压力. 这种技术增强了脊柱的稳定性,并在融合过程中减轻了端板压力.
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:
- 斜腰间体融合 (OLIF) 可能受益于额外的固定来管理子负载.
- 在OLIF中横向固定的生物力学影响尚未得到充分证实.
研究的目的:
- 通过有限元分析来比较OLIF带有和没有额外的横向固定的生物力学效应.
- 评估子位置 (中心与斜) 对机械反应的影响.
主要方法:
- 用OLIF子开发腰椎 (L4-L5) 的有限元模型.
- 包括一个侧面螺杆固定系统来评估负载重新分配和稳定性.
- 在模拟生理负荷下对中心和斜布置的比较.
主要成果:
- 额外的侧固定将子的负载减少了70-72%,无论是中心还是斜的子位置.
- 在延伸过程中对子的峰值等效应力在没有横向固定的倾斜位置上与中心位置相比增加了三倍.
- 侧向固定有效地重新分配负载并增强脊柱稳定性.
结论:
- 侧面螺杆固定是OLIF的宝贵补充,可以减少端板负荷和压力.
- 这种固定方法可以改善OLIF程序的生物力学特征.
- 需要进一步研究这种综合方法的临床疗效.
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