Finite element study of contact pressure distribution on inner and outer liner in the bipolar hip prosthesis

Finite element study of contact pressure distribution on inner and outer liner in the bipolar hip prosthesis

Saputra, E.
Anwar, I.B.
Ismail, R.
Jamari, J.
van der Heide, E.

Suryana, R. (editor)

2016

Wear in the hip prosthesis due to sliding contact as a product of human activity is a phenomenon which cannot be avoided. In general, there are two modelof hip prostheses which are widely used in total hip replacement, i.e. unipolar and bipolar models. Wear in the bipolar model is more complex than the unipolar model due to its contact motion. The bipolar model has two contact mechanisms while the unipolar model has only one contact mechanism. It means that the bipolar model has two wear positions, i.e. wear on inner and outer liner surface. Fortunately, wear phenomena in the hip prosthesis can be predicted by analytical or numerical method. Wear on the inner and outer liner surface in the bipolar model itself can be early predicted by contact pressure distribution that is obtained from contact mechanic analysis.The contact pressure distribution itself is an essential variable in wear equations. This paper is aimed to studythe difference of the contact pressure distribution on the inner and outer liner surface in the bipolar model. To obtain the contact pressure distribution at each surface, contact mechanic analysis on the inner and outer liner surface by analytical and numerical method were performed. Results showedthat there was significant difference of the contact pressure distribution on the inner and outer liner surface in the bipolar model. Therefore, it is expected that there is significant wear difference on the inner and outer liner in the bipolar model.

Nano Technology
MAS - Materials Solutions
TS - Technical Sciences
Health
Industrial Innovation
Hip prothesis
Wear

http://resolver.tudelft.nl/uuid:ead058f9-00d9-4bb5-aff2-18fbdaf7fcaa

https://doi.org/10.1063/1.4945529

572398

American Institute of Physics Inc.

9780735413726

0094-243X

3rd International Conference on Advanced Materials Science and Technology, ICAMST 2015, 6 October 2015 through 7 October 2015, 1725

AIP Conference Proceedings

020075

conference paper