The effect of physiological load configuration on interface micromotion in cementless femoral stems
The most commonly reported failure modes of cementless hip stems are loosening and thigh pain; both are attributed to the relative motion at the bone-implant interface due to failure to achieve sufficient primary fixation. Accurate predictions of hip stems’ stability are therefore crucial to the p...
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| Format: | Article |
| Language: | en en |
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Faculty of Mechanical Engineering, Universiti Teknologi Malaysia
2007
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| Online Access: | http://eprints.utm.my/8119/3/MohammedRafiqAbdul2007_TheEffectofPhysiologicalLoadConfiguration.pdf http://eprints.utm.my/8119/4/Physiological%20Load%28Rafiq-jilid23%29.pdf http://eprints.utm.my/8119/ |
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| _version_ | 1845471946703110144 |
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| author | Abdul Kadir, Mohammed Rafiq Hansen, Ulrich N. |
| author_facet | Abdul Kadir, Mohammed Rafiq Hansen, Ulrich N. |
| author_sort | Abdul Kadir, Mohammed Rafiq |
| building | UTM Library |
| collection | Institutional Repository |
| content_provider | Universiti Teknologi Malaysia |
| content_source | UTM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | The most commonly reported failure modes of cementless hip stems are loosening and thigh pain; both are attributed to the relative motion at the bone-implant interface due to failure to achieve sufficient primary fixation. Accurate predictions of hip stems’ stability are therefore crucial to the pre-clinical analyses of hip arthroplasty. This study uses finite element technique to analyse the effect of
muscle forces on the predicted micromotion and therefore stability of cementless femoral components. An in-house experimentally validated micromotion algorithm was used in analyses simulating two of the most common physiological activities–walking and stair-climbing. The results showed that models where muscle loads were included had ten times larger micromotion than those modelled without muscle loads. Ignoring muscle forces in any pre-clinical evaluation of femoral stems are therefore not advisable as it will overestimate the stability of the stem. |
| format | Article |
| id | my.utm.eprints-8119 |
| institution | Universiti Teknologi Malaysia |
| language | en en |
| publishDate | 2007 |
| publisher | Faculty of Mechanical Engineering, Universiti Teknologi Malaysia |
| record_format | eprints |
| spelling | my.utm.eprints-81192014-01-01T08:30:47Z http://eprints.utm.my/8119/ The effect of physiological load configuration on interface micromotion in cementless femoral stems Abdul Kadir, Mohammed Rafiq Hansen, Ulrich N. TJ Mechanical engineering and machinery The most commonly reported failure modes of cementless hip stems are loosening and thigh pain; both are attributed to the relative motion at the bone-implant interface due to failure to achieve sufficient primary fixation. Accurate predictions of hip stems’ stability are therefore crucial to the pre-clinical analyses of hip arthroplasty. This study uses finite element technique to analyse the effect of muscle forces on the predicted micromotion and therefore stability of cementless femoral components. An in-house experimentally validated micromotion algorithm was used in analyses simulating two of the most common physiological activities–walking and stair-climbing. The results showed that models where muscle loads were included had ten times larger micromotion than those modelled without muscle loads. Ignoring muscle forces in any pre-clinical evaluation of femoral stems are therefore not advisable as it will overestimate the stability of the stem. Faculty of Mechanical Engineering, Universiti Teknologi Malaysia 2007-06 Article PeerReviewed application/pdf en http://eprints.utm.my/8119/3/MohammedRafiqAbdul2007_TheEffectofPhysiologicalLoadConfiguration.pdf text/html en http://eprints.utm.my/8119/4/Physiological%20Load%28Rafiq-jilid23%29.pdf Abdul Kadir, Mohammed Rafiq and Hansen, Ulrich N. (2007) The effect of physiological load configuration on interface micromotion in cementless femoral stems. Jurnal Mekanikal (23). pp. 50-61. ISSN 0127-3396 |
| spellingShingle | TJ Mechanical engineering and machinery Abdul Kadir, Mohammed Rafiq Hansen, Ulrich N. The effect of physiological load configuration on interface micromotion in cementless femoral stems |
| title | The effect of physiological load configuration on interface micromotion in cementless femoral stems
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| title_full | The effect of physiological load configuration on interface micromotion in cementless femoral stems
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| title_fullStr | The effect of physiological load configuration on interface micromotion in cementless femoral stems
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| title_full_unstemmed | The effect of physiological load configuration on interface micromotion in cementless femoral stems
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| title_short | The effect of physiological load configuration on interface micromotion in cementless femoral stems
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| title_sort | effect of physiological load configuration on interface micromotion in cementless femoral stems |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/8119/3/MohammedRafiqAbdul2007_TheEffectofPhysiologicalLoadConfiguration.pdf http://eprints.utm.my/8119/4/Physiological%20Load%28Rafiq-jilid23%29.pdf http://eprints.utm.my/8119/ |
| url_provider | http://eprints.utm.my/ |