摘要
人工髋关节置换手术是利用机械性能和生物相容性良好的材料制成类似人体骨关节的假体,然后把其置换到被破坏的关节面。它可以缓解甚至消除病痛,有效地维持关节的稳定性和自由度,从而恢复关节的正常性能。利用有限元法建立人工髋关节股骨柄的三维有限元模型,以探讨不同材料股骨柄假体的疲劳性能,从而确保髋关节置换假体的安全性及可靠性。计算获得了两种不同金属材料髋关节假体的疲劳性能,包括假体的寿命、变形等结果。钛合金假体的使用寿命最小为568万次,满足ISO标准。而不锈钢材料则不适合作为假体材料。
Total hip replacement（THR）is replacing the prosthesis stem similar to human bone that takes advantage of the material with both good mechanical properties and biocompatibility to the damaged articular surface.Thus it can not only alleviate or even eliminate the pain but also effectively maintain the joint stability and freedom and restore its normal performance.Finite element analysis was used in this study to establish a 3D model of artificial hip stem,and explore its fatigue properties of different materials to ensure the safety and reliability.The calculating obtained two results of different metal hip prosthesis,including lifetime and deformation.The minimum service life of titanium prosthesis reaches 568 million times,which satisfies ISO standards,while the stainless steel does not suit to be a prosthesis material.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2015年第1期73-76,共4页
Journal of Biomedical Engineering
基金
国家自然科学基金资助项目(31300783
51202144)
中国博士后科学基金(2014M561458)
教育部博士点基金联合资助项目(20123121120004)
上海海事大学科研基金资助项目(20130474)
上海高校一流学科-管理科学与工程
上海市自然科学基金资助项目(13ZR1419200)
关键词
疲劳性能
假体
髋关节
fatigue property
prosthesis
hip joint
