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首页> 外文期刊>Romanian Journal of Morphology and Embryology >Morphological experimental study of bone stress at the interface acetabular bone/prosthetic cup in the bipolar hip prosthesis
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Morphological experimental study of bone stress at the interface acetabular bone/prosthetic cup in the bipolar hip prosthesis

机译：双极髋关节假体髋臼骨/假体杯界面处骨应力的形态学实验研究

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摘要

By calculating the tension and distortion of the elements composing the bipolar prosthesis under extreme conditions encountered in real life using a special post-processing program, we established the variation curves of the contact pressure at the hip bone-cup, armor-cup and cup-femoral head interface. By comparing the data obtained from all the examined cases, important conclusions were drawn regarding the influence of tension and pressure distribution on the structural integrity and biomechanics of the prosthesis, as well as the acetabular wear and tear, in order to assess its reliability. The experimentally determined tension and distortion status at the acetabular bone-metal armour interface, lead to the wear and tear phenomenon, which can be explained by three mechanisms and theories incompletely reflecting the overall process. The histopathologic study of the acetabular bone tissue using FEM (finite elements method) on surgically removed specimens will probably lead to the identification of a series of factors that could reduce the rate of the wear and tear process.
机译：通过使用特殊的后处理程序，在现实生活中遇到的极端条件下，计算组成双极假体的元件的张力和变形，我们建立了髋骨杯，铠甲杯和杯体接触压力的变化曲线。股骨头接口。通过比较从所有检查病例中获得的数据，就张力和压力分布对假体的结构完整性和生物力学以及髋臼磨损的影响得出重要结论，以评估其可靠性。由实验确定的髋臼骨金属铠装界面处的张力和变形状态会导致磨损现象，这可以通过三种机制和理论不能完全反映整个过程来解释。使用FEM（有限元方法）对手术切除的标本进行髋臼骨组织的组织病理学研究，可能会导致确定一系列因素，这些因素可能会降低磨损过程的速度。

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