在小鼠皮皮层横向运输过程中,对老鼠皮的生物力学影响的有限元分析
Puxiang Zhen1,2,3, Jie Liu1,2, Hongjie Su1,2
1Guangxi Medical University, Nanning, China.
Frontiers in bioengineering and biotechnology
|November 28, 2025
概括
这项研究开发了一种有限元模型,用于糖尿病大鼠的皮皮层横向输送 (TTT),表明该程序在生物机械上是稳定的,并且对于潜在的临床用途是安全的.
科学领域:
- 生物医学工程 生物医学工程
- 整形外科手术 整形外科手术
- 计算力学 计算力学 计算力学
背景情况:
- 糖尿病足 (DFU) 是一个重大的临床挑战,通常需要先进的重建技术.
- 皮层横向输送 (TTT) 是一种用于治疗下肢缺血症的手术方法.
- 生物力学验证对于将临床前外科模型转化为临床应用至关重要.
研究的目的:
- 建立和验证一个有限元 (FE) 生物机械模型,用于在糖尿病老鼠模型中进行叶皮层横向传输 (TTT).
- 在糖尿病大鼠中计算评估TTT程序的生物机械安全性和稳定性.
- 将临床前研究结果与DFU治疗的潜在临床转化联系起来.
主要方法:
- 用一个定制的横向骨切除运输框架在糖尿病大鼠中创建TTT模型.
- 在多个术后时间点对收获的骨和骨进行活体微型CT扫描.
- 使用专门的软件 (模拟器,3-matic Medical,Geomagic Studio,Hypermesh,MSC.Patran,MSC.Nastran) 进行FE分析,以模拟负载条件.
主要成果:
- 在各种负荷条件下 (压缩,扭曲,曲) 运输的骨片段的峰值应力在术后的时间点中显示出最小的变化.
- 运输碎片,原生骨和外部固定器之间发生了动态负载共享,渐进的愈合减少了固定压力.
- 可调节的外部固定器确保了解剖学对齐,而不会超过皮质骨收益率强度,表明成功固定和稳定.
结论:
- 在TTT大鼠模型中,在体中证明了生物机械稳定性和外科安全性.
- FE模型支持TTT的转化潜力,用于治疗像DFU这样的疾病.
- 建议进行进一步的实验验证,以确认这些计算发现.
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