全针织在线固定用于中侧骨关节重建:固定结构的生物机械比较
Benjamin L Smith1, Asheesh Bedi2, Oliver L Hauck1
1Department of Orthopedic Research, Arthrex, Inc, Naples, Florida, USA.
Orthopaedic journal of sports medicine
|November 25, 2024
概括
全縫 (ASAs) 在中部骨 (MPFL) 重建中表现出可比的循环延伸与干扰固定. 这项研究支持ASAs作为可行的固定选项,超过原生MPFL生物力学值.
科学领域:
- 整形外科手术 整形外科手术
- 生物机械工程 生物机械工程
- 运动医学运动医学
背景情况:
- 全縫 (ASAs) 提供了中部骨筋 (MPFL) 重建的潜在的临床益处,特别是在儿科膝盖.
- 然而,有限的生物力学数据存在,以支持ASA与传统植入物相比使用.
研究的目的:
- 为了比较ASAs与MPFL重建的大型干扰植入物的生物力学性能.
- 假设ASAs会表现出类似于干扰固定的周期延长,并超过原生MPFL值.
主要方法:
- 一个生物机械研究,使用猪骨和股骨模型进行MPFL重建.
- 对比了两个2.6毫米的ASA与两个3.9毫米的干扰接 (ISA) 用于骨固定.
- 对比一个2.6毫米的ASA与一个6x20毫米的干扰螺丝 (IS) 用于股骨固定.
- 动态负载和负载到故障测试在人类肌移植器上进行.
主要成果:
- 在ASA和干扰固定组之间没有观察到周期延长的显著差异.
- 与ASA相比,与IS的股骨固定显示出更大的最终刚性和负载.
- 与ISAs的骨固定显示出较大的最终刚度,但最终负荷低于ASAs.
- 所有测试的固定方法都超过了原生人类MPFL的生物力学值.
结论:
- 全接 (ASA) 在线固定在MPFL重建中提供了与干扰固定相比较的周期延长.
- 尽管在最终强度上存在明显的差异,但所有测试的植入物都超过了原生MPFL的生物力学特性.
- ASA固定是MPFL重建的可行选择,提供诸如减少骨移除等优势.
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