Stability of talus component in total ankle arthroplasty
Early design of total ankle arthroplasty showed poor clinical outcomes and has since been regarded as an inferior procedure to arthrodesis. Initial attempt of ankle replacement used the design concept for total hip arthroplasty, with the stem implanted into the tibia and the cup implanted into the t...
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| Format: | Book Section |
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Springer Berlin Heidelberg
2008
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| Online Access: | http://eprints.utm.my/6951/ |
| _version_ | 1848891377662820352 |
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| author | Abdul Kadir, Mohammed Rafiq Kamsah, N. Sabudin, H. |
| author_facet | Abdul Kadir, Mohammed Rafiq Kamsah, N. Sabudin, H. |
| author_sort | Abdul Kadir, Mohammed Rafiq |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | Early design of total ankle arthroplasty showed poor clinical outcomes and has since been regarded as an inferior procedure to arthrodesis. Initial attempt of ankle replacement used the design concept for total hip arthroplasty, with the stem implanted into the tibia and the cup implanted into the talus. The procedure was abandoned due to unsatisfactory early outcomes. However, the procedure is gaining popularity lately due to various clinical complications associated with bone fusion. New implants for TAR were introduced with designs that are more closely resembled the natural anatomy of the ankle. Biomechanical analysis of the replaced joint is crucial to achieve better understanding of its behaviour under physiological loading. At present, biomechanics research of the ankle joint after arthroplasty is fairly limited. In this study, finite element analysis was used to examine the stability of two design features of the talus component for total ankle replacement — the single-fin and the double-fin. Three dimensional model of the talus bone was reconstructed from CT dataset and the implant was positioned on the trochlea. The bone was assigned with cortical bone properties and pressure was applied on the superior surface of the implant. Nonlinear contact analysis was performed together with an in-house experimentally validated micromotion algorithm to predict the stability of the implants. Results showed that the talus component with double-fin was more stable than the one designed with single-fin. However, the magnitude of micromotion for both designs did not exceed the threshold limit for osseointegration, suggesting the adequacy of single-fin to provide primary stability. |
| first_indexed | 2025-11-15T20:57:00Z |
| format | Book Section |
| id | utm-6951 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T20:57:00Z |
| publishDate | 2008 |
| publisher | Springer Berlin Heidelberg |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-69512017-07-25T03:28:13Z http://eprints.utm.my/6951/ Stability of talus component in total ankle arthroplasty Abdul Kadir, Mohammed Rafiq Kamsah, N. Sabudin, H. TJ Mechanical engineering and machinery Early design of total ankle arthroplasty showed poor clinical outcomes and has since been regarded as an inferior procedure to arthrodesis. Initial attempt of ankle replacement used the design concept for total hip arthroplasty, with the stem implanted into the tibia and the cup implanted into the talus. The procedure was abandoned due to unsatisfactory early outcomes. However, the procedure is gaining popularity lately due to various clinical complications associated with bone fusion. New implants for TAR were introduced with designs that are more closely resembled the natural anatomy of the ankle. Biomechanical analysis of the replaced joint is crucial to achieve better understanding of its behaviour under physiological loading. At present, biomechanics research of the ankle joint after arthroplasty is fairly limited. In this study, finite element analysis was used to examine the stability of two design features of the talus component for total ankle replacement — the single-fin and the double-fin. Three dimensional model of the talus bone was reconstructed from CT dataset and the implant was positioned on the trochlea. The bone was assigned with cortical bone properties and pressure was applied on the superior surface of the implant. Nonlinear contact analysis was performed together with an in-house experimentally validated micromotion algorithm to predict the stability of the implants. Results showed that the talus component with double-fin was more stable than the one designed with single-fin. However, the magnitude of micromotion for both designs did not exceed the threshold limit for osseointegration, suggesting the adequacy of single-fin to provide primary stability. Springer Berlin Heidelberg 2008 Book Section PeerReviewed Abdul Kadir, Mohammed Rafiq and Kamsah, N. and Sabudin, H. (2008) Stability of talus component in total ankle arthroplasty. In: IFMBE Proceedings. Springer Berlin Heidelberg, pp. 453-456. ISBN 1680-0737 https://link.springer.com/chapter/10.1007/978-3-540-69139-6_115 |
| spellingShingle | TJ Mechanical engineering and machinery Abdul Kadir, Mohammed Rafiq Kamsah, N. Sabudin, H. Stability of talus component in total ankle arthroplasty |
| title | Stability of talus component in total ankle arthroplasty |
| title_full | Stability of talus component in total ankle arthroplasty |
| title_fullStr | Stability of talus component in total ankle arthroplasty |
| title_full_unstemmed | Stability of talus component in total ankle arthroplasty |
| title_short | Stability of talus component in total ankle arthroplasty |
| title_sort | stability of talus component in total ankle arthroplasty |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/6951/ http://eprints.utm.my/6951/ |