Effect of the Cavity-Cavity Interaction on the Stress Amplitude in Orthopedic Cement

• 作者: Belabbes Bachir Bouiadjra Boualem Serier Hamida Fekirini Leila Zouambi
• 来源期刊: 生物材料与纳米技术(英文)
• 学科: 医学
• 关键词: CEMENT Stress CONCENTRATION INTERACTION EFFECT CAVITY Size
• 年，卷（期）: 2013,（1）
• 页码范围: 30-36
• 页数: 7页
• 分类号: R73

摘要

The presence of porosities in bone cement (polymethylmethacrylate) in total hip prosthesis (THP) cemented is necessary for the diffusion of antibiotics, but it is a critical characteristic of weakening by the effect of stress concentration and the interconnecting pores. The aim of this study was to analyse by the finite element method (FEM), the size influence of micro-cavities in cement assuming the junction cup-bone, and the effect of cavity-cavity interaction on the stress level and distribution in cement according to the human stance defined by the implant position axis compared to that of the cup.