@article{Chong:2015:10.1142/S0219519416500706,
author = {Chong, DYR and Hansen, UN and Amis, AA},
doi = {10.1142/S0219519416500706},
journal = {Journal of Mechanics in Medicine and Biology},
title = {CEMENTLESS MIS MINI-KEEL PROSTHESIS REDUCES INTERFACE MICROMOTION VERSUS STANDARD STEMMED TIBIAL COMPONENTS},
url = {http://dx.doi.org/10.1142/S0219519416500706},
volume = {16},
year = {2015}
}

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TY  - JOUR
AB  - Fixation strength of the cementless knee prostheses is dependent on the initial stability of the fixation and minimal relative motion across the prosthesis–bone interface. Broad mini-keels have been developed for tibial components to allow minimally invasive knee arthroplasty, but the effect of the change in fixation design is unknown. In this study, bone–prosthesis interface micromotions of the mini-keel tibial components (consisting of two designs; one is stemless and another with a stem extension of 45mm) induced by walking and stair climbing were investigated by finite element modeling and compared with standard stemmed design. The prosthesis surface area amenable for bone ingrowth for the mini-keel tibial components (both stemmed and unstemmed) was predicted to be at least 67% larger than the standard stemmed implant, thereby reducing the risk of long-term aseptic loosening. It was also found that while different load patterns may have led to diverse predictions of the magnitude of the interface micromotions and the extent of osseointegration onto the prosthesis, the outcome of design change evaluation in cementless tibial fixations remains unchanged. The mini-keel tibial components were predicted to anchor onto the periprosthetic bone better than the standard stemmed design under all loading conditions investigated.
AU  - Chong,DYR
AU  - Hansen,UN
AU  - Amis,AA
DO  - 10.1142/S0219519416500706
PY  - 2015///
SN  - 0219-5194
TI  - CEMENTLESS MIS MINI-KEEL PROSTHESIS REDUCES INTERFACE MICROMOTION VERSUS STANDARD STEMMED TIBIAL COMPONENTS
T2  - Journal of Mechanics in Medicine and Biology
UR  - http://dx.doi.org/10.1142/S0219519416500706
VL  - 16
ER  - 

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