内螺丝是否能在全肘关节整形手术中为部和部部件提供足够的固定? 一个尸体分析
Ehab M Nazzal1, Luke T Mattar2, Benjamin W Newell2
1Orthopedic Robotics Laboratory, University of Pittsburgh, Pittsburgh, PA; University of Pittsburgh Medical Center Department of Orthopedic Surgery, Pittsburgh, PA.
The Journal of hand surgery
|August 8, 2023
概括
这项研究评估了全肘关节整形手术的无水泥内螺丝固定. 骨螺丝接口证明了结构完整性,这表明在肘部关节置换中非水泥固定的潜在好处.
科学领域:
- 骨科生物力学 骨科生物力学
- 生物材料科学是生物材料的科学.
- 手术植入物技术的使用.
背景情况:
- 肘部整体关节整形术 (TEA) 旨在恢复功能并缓解严重肘部关节损伤的疼痛.
- 目前的TEA技术通常依赖于固固定,这可能会导致长期并发症.
- 目前正在探索无固定策略,以改善植入物寿命和患者的治疗结果.
研究的目的:
- 评估尸体骨螺丝接口的结构性质,用于无水泥的内螺丝固定.
- 为了评估螺丝在部和部样本中的生物力学性能,以便在TEA中潜在使用.
主要方法:
- 准备和挖掘了七个手腕和七个肘部尸体标本的内道.
- 在准备好的骨中插入螺丝.
- 样品经过单轴拉伸测试,以确定故障负载,刚度和能量吸收.
主要成果:
- 骨样本在测试结束时的负载为2721 ± 738 N,硬度为1077 ± 336 N/mm.
- 部样本表现相似,达到部末端测试负荷的92%和其延长的120%.
- 由于螺丝拉出或骨折而出现故障,一些标本在故障之前超过3000N.
结论:
- 内髓螺丝固定提供了坚固的结构支,超过通常需要骨整合所需的力.
- 在肘部关节的无固定证明了TEA潜在的临床应用的有希望的生物力学特性.
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