中国组织工程研究与临床康复2009，Vol.13Issue(9)：1785-1788,4.
不同骨质密度下生物型及骨水泥型股骨假体置入后的三维有限元分析
Three-dimensional finite element analysis of uncemented and cemented femoral prostheses implanted under different bone densities
李叔强 1李冬松 1齐欣 1范洪辉 1刘建国1
作者信息
- 1. 吉林大学第一医院骨关节二科,吉林省长春市,130021
- 折叠
摘要
Abstract
BACKGROUND: During the hip replacement, selection of prosthesis often depends on patients' bone condition. There has been no gold standard for selection of prosthesis. It will be of scientific significance to select femoral prostheses implanted under different bone densities through three-dimensional finite element analysis and simulated contrast mechanical tests.OBJECTIVE: Three-dimensional finite element analysis was employed to select femoral prostheses according to different bone densities, and simultaneously simulated contrast mechanical tests were performed to determine the age criteria regarding the selection of femoral prosthesis during the hip replacement.DESIGN, TIME AND SETTING: An open experiment was performed at the Second Department of Orthopedics, First Clinical Hospital of Jilin University and Institute of Biomechanics, Jilin University between September 2006 and May 2007.MATERIALS: Freshly adult femoral specimens were harvested from cadavers.METHODS: Three-dimensional finite element models of femur were established using Solidworks software. Following the known formula, the bone density and elastic modulus at different age brackets were calculated and input into the computer. The human one-foot standing condition was simulated and pressure was loaded on the reconstructed femoral models.MAIN OUTCOME MEASURES: Some biomechanical characteristics of uncemented and cemented femoral prostheses, such as the distress distribution and initial micromovement at different bone densities, were measured.RESULTS: Relatively well-distributed whole distress and slight initial micromovement of uncemented femoral prostheses were found in male patients at 30-60 years old and in female patients at 40-55 years old. Symptoms of cemented femoral prostheses the same as the uncemented femoral prostheses were present in male patients at 60-70 years and in female patients older than 55 years old.CONCLUSION: Results of three-dimensional finite element analysis and simulated contrast mechanical tests suggest that uncemented femoral prostheses provide better therapeutic effects in male patients younger than 60 years and in female patients younger than 55 years than cemented femoral prosthesis.关键词
三维有限元分析/应力/股骨假体/骨密度分类
医药卫生引用本文复制引用
李叔强,李冬松,齐欣,范洪辉,刘建国..不同骨质密度下生物型及骨水泥型股骨假体置入后的三维有限元分析[J].中国组织工程研究与临床康复,2009,13(9):1785-1788,4.
