不同的固定系统在振动条件下对斜腰间体融合的影响
Bin Zhang1, Tian-Cheng Li1, Xin Wang1
1Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control, School of mechanical engineering, Tianjin University of Technology, Tianjin, 300384, China; National Demonstration Center for Experimental Mechanical and Electrical Engineering Education, Tianjin, 300384, China.
在全身振动 (WBV) 条件下,双边脚螺丝固定提供了斜腰间体融合 (OLIF) 的卓越稳定性,防止子沉降并保持磁盘高度. 对于驾驶员或处于振动环境的人来说,不建议侧板固定.
科学领域:
- 生物力学 生物力学
- 脊柱外科手术 脊柱外科手术
- 整形外科 整形外科 整形外科
背景情况:
- 退行性腰椎病理会导致严重的疼痛和降低生活质量.
- 斜腰间体融合 (OLIF) 是一种主要的治疗方法,但其在振动下的性能还未得到充分研究.
- 了解振动环境中的固定系统的生物力学特性对于患者的治疗结果至关重要.
研究的目的:
- 研究OLIF手术中使用的不同固定系统对腰椎振动特征的影响.
- 评估各种固定结构在全身振动 (WBV) 下的生物力学稳定性.
主要方法:
- 开发了L1-S1腰椎的有限元素 (FE) 模型,结合了五种不同的固定系统的OLIF手术.
- 模拟全身振动 (WBV) 使用压缩追随负荷 (500 N) 和正弦轴垂直负荷 (±40 N 在5 Hz).
主要成果:
- 双边脚螺丝固定显示了对子沉降的最高抵抗力,并在WBV下有效地保持了盘高度.
- 侧板固定导致关键组织的过度压力,可能阻碍恢复和增加并发症.
结论:
- 建议在经常暴露于振动环境的个体,如司机的OLIF手术中进行双边脚螺丝固定.
- 侧板固定,当作为一个独立的系统使用时,由于高压力诱导和对患者康复的潜在不良影响,不建议.
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