Study on Biotribological Behavior of the Combined Joint of CoCrMo and UHMWPE/BHA Composite in a Hip Joint Simulator

作     者：Qingliang Wang, Jinlong Liu, Shirong GeCollege of Materials and Engineering, China University of Mining and Technology, Xuzhou 221007, P. R. China 

作者机构：College of Materials and Engineering China University of Mining and Technology Xuzhou P. R. China 

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

年 卷 期：2009年第6卷第4期

页      面：378-386页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 0836[工学-生物工程] 

基　　金：supports by the Tribology Science Fund from the State Key Laboratory of Tribology(SKLT)at Tsinghua University (No.SKLTKF08A01) the National Nature Science Foundation of China(Grant No.50535050) 

主　　题：UHMWPE hydroxyapatite biotribology joint prosthesis 

摘      要：UHMWPE composites reinforced with Bovine Bone Hydroxyapatite(BHA)in different contents were prepared by heat pressing formation method.A hip joint wear simulator was used to investigate the biotribological behavior of UHMWPE/BHA composite acetabular cups against CoCrMo alloy femoral heads in bovine synovia lubrication at 37±1 ℃.It was found that the addition of BHA powder to UHMWPE can improve the hardness and creep modulus of UHMWPE/BHA composites,and decrease their wear rates under bovine synovia *** the content of BHA filler particles was up to 30 wt%, UHMWPE/BHA composites demonstrated the well design performances of the surface and biotribological ***, ploughing and slight adhesive wear were the main wear mechanisms for UHMWPE and its *** addition,the sizes of wear particles became larger with an increase in BHA powder *** results suggest that BHA filler is a desirable component to increase the wear resistance of UHMWPE/BHA composites for biomedical applications.