Nor Azali Azmir and Iskhrizat Taib and Mohammed Rafiq Abdul Kadir
The Effect of Press Fit on Osseointegration of Acetabular Cup
480 - 484
2012
6
10
International Journal of Biomedical and Biological Engineering
https://publications.waset.org/pdf/783
https://publications.waset.org/vol/70
World Academy of Science, Engineering and Technology
The primary cause of Total Hip Replacement (THR)
failure for younger patients is aseptic loosening. This complication is
twice more likely to happen in acetabular cup than in femoral stem.
Excessive micromotion between bone and implant will cause
loosening and it depends in patient activities, age and bone. In this
project, the effects of different metal back design of press fit on
osseointegration of the acetabular cup are carried out. Commercial
acetabular cup designs, namely Spiked, Superfix and Quadrafix are
modelled and analyzed using commercial finite element software.
The diameter of acetabular cup is based on the diameter of acetabular
rim to make sure the component fit to the acetabular cavity. A new
design of acetabular cup are proposed and analyzed to get better
osseointegration between the bones and implant interface. Results
shows that the proposed acetabular cup designs are more stable
compared to other designs with respect to stress and displacement
aspects.
Open Science Index 70, 2012