一个生物力学比较的带固定技术在中间带带带带带重建中的生物力学比较
Sean Martin1, Samuel I Fuller1, Mark T Ehrensberger2
1Department of Orthopaedics and Sports Medicine, University at Buffalo, Buffalo, New York, USA.
Orthopaedic journal of sports medicine
|November 20, 2025
概括
接固定用于中间骨肌带重建 (MPFLR) 在生物力学上优于干扰螺丝. 这种方法提供了更大的强度和更少的形损伤,可能会改善膝盖不稳定的患者的结果.
科学领域:
- 整形外科手术 整形外科手术
- 生物医学工程 生物医学工程
- 运动医学运动医学
背景情况:
- 中部骨带重建 (MPFLR) 的并发症包括移植松/破裂和骨骨折,导致持续的膝盖疼痛和不稳定.
- 与接固定相比,干扰螺丝在骨-移植接口上的固定与具有较高的阴性骨骨折发生率有关.
研究的目的:
- 在MPFLR过程中生物机械地比较干扰螺丝的固定强度与MPFLR过程中半状骨架中半状骨架的接.
主要方法:
- 在一项受控的实验室研究中,使用了8对人类尸体骨和半状动物自体移植.
- 植入物被用针 (3毫米) 或干扰螺丝 (3.9毫米) 固定在骨上.
- 生物力学测试评估了结构移位,刚性和最终负载到故障.
主要成果:
- 在干扰螺丝 (5.44 ± 1.22 毫米) 和接 (6 ± 1.64 毫米) 组之间循环负荷后的位移没有显著差异 (P = .47).
- 干扰螺丝组与接基组 (281.56 ± 81.5 N) (P = .008) 相比,具有明显较低的平均最终故障负载 (153.4 ± 81.5 N).
- 接 (48.22 ± 20.75 N/mm) 和干扰螺丝组 (52.18 ± 13.24 N/mm) (P = .67) 之间的平均刚度是可比的.
结论:
- 与干扰螺杆固定相比,接 anchor 固定显示出明显更高的最终拉力负荷.
- 这两种方法在循环负荷下显示出相似的位移和刚性.
- 接可以最大限度地减少骨钻孔,为MPFLR提供一种潜在的更安全的固定方法.
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