作者
M Tarala, D Janssen, N Verdonschot
发表日期
2011/4/1
期刊
Medical engineering & physics
卷号
33
期号
3
页码范围
374-380
出版商
Elsevier
简介
In order to design a good cementless femoral implant many requirements need to be fulfilled. For instance, the range of micromotions at the bone–implant interface should not exceed a certain threshold and a good ratio between implant–bone stiffness that does not cause bone resorption, needs to be ensured. Stiff implants are known to evoke lower interface micromotions but at the same time they may cause extensive resorption of the surrounding bone. Composite stems with reduced stiffness give good remodeling results but implant flexibility is likely to evoke high micromotions proximally. Finding a good balance between these incompatible design goals is very challenging. The current study proposes a finite element methodology that employs subsequent ingrowth and remodeling simulations and can be of assistance when designing new implants. The results of our simulations for the Epoch stem were in a …
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