一个体外研究,在异常加载和升起过程中对膜植入器外围接口机制进行了实验
Jakub Targosinski1,2, Jonathan Kusins1,2, George Athwal2,3
1Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada.
概括
肩部植入物中的外围钉经历了高拉伸应变,特别是在后侧钉接口附近. 这表明在全肩关节整形手术期间,状腺植入物固定的潜在失败启动点.
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.
- 手术植入物设计的外科设计.
背景情况:
- 解剖学全肩关节整形手术使用带有外围的腺植入物来管理异常负荷.
- 植入物-水泥-骨接口经历了显著的循环负荷,这对于理解植入物固定失败至关重要.
研究的目的:
- 为了分析状腺体植入物的-水泥-骨接口内的应变分布.
- 为了研究固定失败的微力学,以响应模拟的状腺植入物边缘移位.
主要方法:
- 采用了体外-水泥-骨结构,使用来自骨关节炎患者的骨组织.
- 应用负载条件模拟状腺植入物边缘位移,以分析应变分布.
主要成果:
- 拉伸应变在后侧-结处是最高的,超过了压缩应变.
- 在的固定通道附近,应变幅度较低.
- 确定了高拉伸应力度的特定区域.
结论:
- 结果表明,裂发作可能发生在后侧-结处,可能导致更广泛的状腺植入物固定失败.
- 了解这些菌株模式对于改善状腺体植入物设计和寿命至关重要.
- 这项研究提供了关于状腺植入物失败机制的生物力学见解.
相关概念视频
01:16Eccentric Axial Loading in a Plane of Symmetry
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
01:12General Case of Eccentric Axial Loading
Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions.
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical bending,...
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical bending,...