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Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs
PURPOSE: The aim of this study was to comprehensively evaluate contemporary tibial component designs against global tibial anatomy. We hypothesized that anatomically designed tibial components offer increased morphological fit to the resected proximal tibia with increased alignment accuracy compared...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4237921/ https://www.ncbi.nlm.nih.gov/pubmed/25217314 http://dx.doi.org/10.1007/s00167-014-3282-0 |
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author | Dai, Yifei Scuderi, Giles R. Bischoff, Jeffrey E. Bertin, Kim Tarabichi, Samih Rajgopal, Ashok |
author_facet | Dai, Yifei Scuderi, Giles R. Bischoff, Jeffrey E. Bertin, Kim Tarabichi, Samih Rajgopal, Ashok |
author_sort | Dai, Yifei |
collection | PubMed |
description | PURPOSE: The aim of this study was to comprehensively evaluate contemporary tibial component designs against global tibial anatomy. We hypothesized that anatomically designed tibial components offer increased morphological fit to the resected proximal tibia with increased alignment accuracy compared to symmetric and asymmetric designs. METHODS: Using a multi-ethnic bone dataset, six contemporary tibial component designs were investigated, including anatomic, asymmetric, and symmetric design types. Investigations included (1) measurement of component conformity to the resected tibia using a comprehensive set of size and shape metrics; (2) assessment of component coverage on the resected tibia while ensuring clinically acceptable levels of rotation and overhang; and (3) evaluation of the incidence and severity of component downsizing due to adherence to rotational alignment and overhang requirements, and the associated compromise in tibial coverage. Differences in coverage were statistically compared across designs and ethnicities, as well as between placements with or without enforcement of proper rotational alignment. RESULTS: Compared to non-anatomic designs investigated, the anatomic design exhibited better conformity to resected tibial morphology in size and shape, higher tibial coverage (92 % compared to 85–87 %), more cortical support (posteromedial region), lower incidence of downsizing (3 % compared to 39–60 %), and less compromise of tibial coverage (0.5 % compared to 4–6 %) when enforcing proper rotational alignment. CONCLUSIONS: The anatomic design demonstrated meaningful increase in tibial coverage with accurate rotational alignment compared to symmetric and asymmetric designs, suggesting its potential for less intra-operative compromises and improved performance. LEVEL OF EVIDENCE: III. |
format | Online Article Text |
id | pubmed-4237921 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-42379212014-11-21 Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs Dai, Yifei Scuderi, Giles R. Bischoff, Jeffrey E. Bertin, Kim Tarabichi, Samih Rajgopal, Ashok Knee Surg Sports Traumatol Arthrosc Knee PURPOSE: The aim of this study was to comprehensively evaluate contemporary tibial component designs against global tibial anatomy. We hypothesized that anatomically designed tibial components offer increased morphological fit to the resected proximal tibia with increased alignment accuracy compared to symmetric and asymmetric designs. METHODS: Using a multi-ethnic bone dataset, six contemporary tibial component designs were investigated, including anatomic, asymmetric, and symmetric design types. Investigations included (1) measurement of component conformity to the resected tibia using a comprehensive set of size and shape metrics; (2) assessment of component coverage on the resected tibia while ensuring clinically acceptable levels of rotation and overhang; and (3) evaluation of the incidence and severity of component downsizing due to adherence to rotational alignment and overhang requirements, and the associated compromise in tibial coverage. Differences in coverage were statistically compared across designs and ethnicities, as well as between placements with or without enforcement of proper rotational alignment. RESULTS: Compared to non-anatomic designs investigated, the anatomic design exhibited better conformity to resected tibial morphology in size and shape, higher tibial coverage (92 % compared to 85–87 %), more cortical support (posteromedial region), lower incidence of downsizing (3 % compared to 39–60 %), and less compromise of tibial coverage (0.5 % compared to 4–6 %) when enforcing proper rotational alignment. CONCLUSIONS: The anatomic design demonstrated meaningful increase in tibial coverage with accurate rotational alignment compared to symmetric and asymmetric designs, suggesting its potential for less intra-operative compromises and improved performance. LEVEL OF EVIDENCE: III. Springer Berlin Heidelberg 2014-09-13 2014 /pmc/articles/PMC4237921/ /pubmed/25217314 http://dx.doi.org/10.1007/s00167-014-3282-0 Text en © The Author(s) 2014 https://creativecommons.org/licenses/by/4.0/ Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
spellingShingle | Knee Dai, Yifei Scuderi, Giles R. Bischoff, Jeffrey E. Bertin, Kim Tarabichi, Samih Rajgopal, Ashok Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs |
title | Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs |
title_full | Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs |
title_fullStr | Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs |
title_full_unstemmed | Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs |
title_short | Anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs |
title_sort | anatomic tibial component design can increase tibial coverage and rotational alignment accuracy: a comparison of six contemporary designs |
topic | Knee |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4237921/ https://www.ncbi.nlm.nih.gov/pubmed/25217314 http://dx.doi.org/10.1007/s00167-014-3282-0 |
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