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Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening

Aseptic loosening of femoral components is a significant problem affecting the life of current total knee replacements. To help reduce the problem of aseptic loosening, a new metal–ceramic poros functionally graded biomaterial (FGBM) has been designed to replace the existing metal alloy material nor...

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Main Authors: Bahraminasab, Marjan, Sahari, Barkawi, Edwards, Kevin L., Farahmand, Farzam, Tang, Sai Hong, Naghibi, Hamid
Format: Article
Language:English
Published: Elsevier 2013
Online Access:http://psasir.upm.edu.my/id/eprint/28794/1/Material%20tailoring%20of%20the%20femoral%20component%20in%20a%20total%20knee%20replacement%20to%20reduce%20the%20problem%20of%20aseptic%20loosening.pdf
http://psasir.upm.edu.my/id/eprint/28794/
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spelling my.upm.eprints.287942015-08-24T01:11:36Z http://psasir.upm.edu.my/id/eprint/28794/ Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening Bahraminasab, Marjan Sahari, Barkawi Edwards, Kevin L. Farahmand, Farzam Tang, Sai Hong Naghibi, Hamid Aseptic loosening of femoral components is a significant problem affecting the life of current total knee replacements. To help reduce the problem of aseptic loosening, a new metal–ceramic poros functionally graded biomaterial (FGBM) has been designed to replace the existing metal alloy material normally used. In order to investigate the effect of using a FGBM on distal femur stresses compared to using standard material in a femoral component, a three-dimensional finite element model of the knee prosthesis has been developed. The results of the modeling and subsequent analysis indicate that by using the new FGBM compared to the existing material in a femoral component, higher levels of stress can be realized in the adjacent bone area of the femur and as a consequence reduce harmful atrophy effects. Also, by a judicious choice of material combinations and variation of porosity in the FGBM, the surface properties can be tailored to improve wear resistance at the articular interface and bone anchorage at the femoral end, as well as varying the stiffness in the core of the femoral component. Therefore, the use of the new FGBM improves the performance of knee prostheses by addressing concurrently the three current leading causes of failure; stress-shielding of the bone by the implant, wear of the articular surfaces, and the development of soft tissue at the bone/prosthesis interface as a result of relative implant motion. Elsevier 2013-12 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/28794/1/Material%20tailoring%20of%20the%20femoral%20component%20in%20a%20total%20knee%20replacement%20to%20reduce%20the%20problem%20of%20aseptic%20loosening.pdf Bahraminasab, Marjan and Sahari, Barkawi and Edwards, Kevin L. and Farahmand, Farzam and Tang, Sai Hong and Naghibi, Hamid (2013) Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening. Materials & Design, 52. pp. 441-451. ISSN 0261-3069 10.1016/j.matdes.2013.05.066
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Aseptic loosening of femoral components is a significant problem affecting the life of current total knee replacements. To help reduce the problem of aseptic loosening, a new metal–ceramic poros functionally graded biomaterial (FGBM) has been designed to replace the existing metal alloy material normally used. In order to investigate the effect of using a FGBM on distal femur stresses compared to using standard material in a femoral component, a three-dimensional finite element model of the knee prosthesis has been developed. The results of the modeling and subsequent analysis indicate that by using the new FGBM compared to the existing material in a femoral component, higher levels of stress can be realized in the adjacent bone area of the femur and as a consequence reduce harmful atrophy effects. Also, by a judicious choice of material combinations and variation of porosity in the FGBM, the surface properties can be tailored to improve wear resistance at the articular interface and bone anchorage at the femoral end, as well as varying the stiffness in the core of the femoral component. Therefore, the use of the new FGBM improves the performance of knee prostheses by addressing concurrently the three current leading causes of failure; stress-shielding of the bone by the implant, wear of the articular surfaces, and the development of soft tissue at the bone/prosthesis interface as a result of relative implant motion.
format Article
author Bahraminasab, Marjan
Sahari, Barkawi
Edwards, Kevin L.
Farahmand, Farzam
Tang, Sai Hong
Naghibi, Hamid
spellingShingle Bahraminasab, Marjan
Sahari, Barkawi
Edwards, Kevin L.
Farahmand, Farzam
Tang, Sai Hong
Naghibi, Hamid
Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening
author_facet Bahraminasab, Marjan
Sahari, Barkawi
Edwards, Kevin L.
Farahmand, Farzam
Tang, Sai Hong
Naghibi, Hamid
author_sort Bahraminasab, Marjan
title Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening
title_short Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening
title_full Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening
title_fullStr Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening
title_full_unstemmed Material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening
title_sort material tailoring of the femoral component in a total knee replacement to reduce the problem of aseptic loosening
publisher Elsevier
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/28794/1/Material%20tailoring%20of%20the%20femoral%20component%20in%20a%20total%20knee%20replacement%20to%20reduce%20the%20problem%20of%20aseptic%20loosening.pdf
http://psasir.upm.edu.my/id/eprint/28794/
_version_ 1643829570425585664
score 13.211869

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