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Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans

Alignment of normal, arthritic, and replaced human knees is a much debated subject as is the collateral ligamentous laxity. Traditional quantitative values have been challenged. Methods used to measure these are also not without flaws. Authors review the recent literature and a novel method of measu...

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Detalles Bibliográficos
Autores principales: Deep, Kamal, Picard, Frederic, Clarke, Jon V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4658436/
https://www.ncbi.nlm.nih.gov/pubmed/26636090
http://dx.doi.org/10.3389/fsurg.2015.00062
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author Deep, Kamal
Picard, Frederic
Clarke, Jon V.
author_facet Deep, Kamal
Picard, Frederic
Clarke, Jon V.
author_sort Deep, Kamal
collection PubMed
description Alignment of normal, arthritic, and replaced human knees is a much debated subject as is the collateral ligamentous laxity. Traditional quantitative values have been challenged. Methods used to measure these are also not without flaws. Authors review the recent literature and a novel method of measurement of these values has been included. This method includes use of computer navigation technique in clinic setting for assessment of the normal or affected knee before the surgery. Computer navigation has been known for achievement of alignment accuracy during knee surgery. Now its use in clinic setting has added to the inventory of measurement methods. Authors dispel the common myth of straight mechanical axis in normal knees and also look at quantification of amount of collateral knee laxity. Based on the scientific studies, it has been shown that the mean alignment is in varus in normal knees. It changes from lying non-weight-bearing position to standing weight-bearing position in both coronal and the sagittal planes. It also varies with gender and race. The collateral laxity is also different for males and females. Further studies are needed to define the ideal alignment and collateral laxity which the surgeon should aim for individual knees.
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spelling pubmed-46584362015-12-03 Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans Deep, Kamal Picard, Frederic Clarke, Jon V. Front Surg Surgery Alignment of normal, arthritic, and replaced human knees is a much debated subject as is the collateral ligamentous laxity. Traditional quantitative values have been challenged. Methods used to measure these are also not without flaws. Authors review the recent literature and a novel method of measurement of these values has been included. This method includes use of computer navigation technique in clinic setting for assessment of the normal or affected knee before the surgery. Computer navigation has been known for achievement of alignment accuracy during knee surgery. Now its use in clinic setting has added to the inventory of measurement methods. Authors dispel the common myth of straight mechanical axis in normal knees and also look at quantification of amount of collateral knee laxity. Based on the scientific studies, it has been shown that the mean alignment is in varus in normal knees. It changes from lying non-weight-bearing position to standing weight-bearing position in both coronal and the sagittal planes. It also varies with gender and race. The collateral laxity is also different for males and females. Further studies are needed to define the ideal alignment and collateral laxity which the surgeon should aim for individual knees. Frontiers Media S.A. 2015-11-25 /pmc/articles/PMC4658436/ /pubmed/26636090 http://dx.doi.org/10.3389/fsurg.2015.00062 Text en Copyright © 2015 Deep, Picard and Clarke. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Surgery
Deep, Kamal
Picard, Frederic
Clarke, Jon V.
Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans
title Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans
title_full Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans
title_fullStr Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans
title_full_unstemmed Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans
title_short Dynamic Knee Alignment and Collateral Knee Laxity and Its Variations in Normal Humans
title_sort dynamic knee alignment and collateral knee laxity and its variations in normal humans
topic Surgery
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4658436/
https://www.ncbi.nlm.nih.gov/pubmed/26636090
http://dx.doi.org/10.3389/fsurg.2015.00062
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