Finite Element Analysis of Porous Titanium Alloy Hip Stem to Evaluate the Biomechanical Performance During Walking and Stair Climbing

作     者：Sami Emad Alkhatib Hassan Mehboob Faris Tarlochan 

作者机构：School of Mechanical and Chemical EngineeringM050The University of Western Australia35 Stirling HighwayCrawleyPerthWA6009Australia Department of Engineering ManagementCollege of EngineeringPrince Sultan UniversityRiyadhKingdom of Saudi Arabia Department of Mechanical and Industrial EngineeringCollege of EngineeringQatar UniversityDohaQatar 

出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)

年 卷 期：2019年第16卷第6期

页      面：1103-1115页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0836[工学-生物工程] 0702[理学-物理学] 

基　　金：possible by NPRP Grant No. NPRP 8-876-2-375 from Qatar National Research Fund (a member of Qatar Foundation) 

主　　题：porous cellular microstructures porous hip stems physiological loads finite element analysis stress shielding 

摘      要：Despite the success of cementless hip stem,stress shielding still presents a serious problem leading to bone *** incorporating porous cellular structures represent a promising ***,this study validates the finite element models of titanium(Ti)alloy(Ti-6Al-4V)porous stem and effective porous *** effective porous stems with strut thicknesses 0.33 mm-1.25 mm(18%-90%porosity)under different loading conditions were *** results of finite element models revealed that changing the load type and porosity affect stress *** loads yield the maximum stress levels while walking loads result in the lowest stresses in the ***,the point load results in the maximum stress shielding and micromotions(-19% to 18%,40μm to 703μm),as compared to walking(-17.5% to 3%,35μm to 242μm)and climbing loads(-7% to 1.6%,30μm to 221 μm).Finally,effective porous stems of strut thickness 0.87 mm exhibit the lowest stress shielding signals(5%)under all loading conditions.