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Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs

Background: This study compares knee kinematics in two groups of patients who have undergone primary total knee arthroplasty (TKA) using two different modern designs: medially congruent (MC) and posterior-stabilized (PS). The aim of the study is to demonstrate only minimal differences between the gr...

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Autores principales: Ghirardelli, Stefano, Asay, Jessica L., Leonardi, Erika A., Amoroso, Tommaso, Andriacchi, Thomas P., Indelli, Pier Francesco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8006233/
https://www.ncbi.nlm.nih.gov/pubmed/33804113
http://dx.doi.org/10.3390/jfmk6010027
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author Ghirardelli, Stefano
Asay, Jessica L.
Leonardi, Erika A.
Amoroso, Tommaso
Andriacchi, Thomas P.
Indelli, Pier Francesco
author_facet Ghirardelli, Stefano
Asay, Jessica L.
Leonardi, Erika A.
Amoroso, Tommaso
Andriacchi, Thomas P.
Indelli, Pier Francesco
author_sort Ghirardelli, Stefano
collection PubMed
description Background: This study compares knee kinematics in two groups of patients who have undergone primary total knee arthroplasty (TKA) using two different modern designs: medially congruent (MC) and posterior-stabilized (PS). The aim of the study is to demonstrate only minimal differences between the groups. Methods: Ten TKA patients (4 PS, 6 MC) with successful clinical outcomes were evaluated through 3D knee kinematics analysis performed using a multicamera optoelectronic system and a force platform. Extracted kinematic data included knee flexion angle at heel-strike (KFH), peak midstance knee flexion angle (MSKFA), maximum and minimum knee adduction angle (KAA), and knee rotational angle at heel-strike. Data were compared with a group of healthy controls. Results: There were no differences in preferred walking speed between MC and PS groups, but we found consistent differences in knee function. At heel-strike, the knee tended to be more flexed in the PS group compared to the MC group; the MSKFA tended to be higher in the PS group compared to the MC group. There was a significant fluctuation in KAA during the swing phase in the PS group compared to the MC group, PS patients showed a higher peak knee flexion moment compared to MC patients, and the PS group had significantly less peak internal rotation moments than the MC group. Conclusions: Modern, third-generation TKA designs failed to reproduce normal knee kinematics. MC knees tended to reproduce a more natural kinematic pattern at heel-strike and during axial rotation, while PS knees showed better kinematics during mid-flexion.
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spelling pubmed-80062332021-07-21 Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs Ghirardelli, Stefano Asay, Jessica L. Leonardi, Erika A. Amoroso, Tommaso Andriacchi, Thomas P. Indelli, Pier Francesco J Funct Morphol Kinesiol Article Background: This study compares knee kinematics in two groups of patients who have undergone primary total knee arthroplasty (TKA) using two different modern designs: medially congruent (MC) and posterior-stabilized (PS). The aim of the study is to demonstrate only minimal differences between the groups. Methods: Ten TKA patients (4 PS, 6 MC) with successful clinical outcomes were evaluated through 3D knee kinematics analysis performed using a multicamera optoelectronic system and a force platform. Extracted kinematic data included knee flexion angle at heel-strike (KFH), peak midstance knee flexion angle (MSKFA), maximum and minimum knee adduction angle (KAA), and knee rotational angle at heel-strike. Data were compared with a group of healthy controls. Results: There were no differences in preferred walking speed between MC and PS groups, but we found consistent differences in knee function. At heel-strike, the knee tended to be more flexed in the PS group compared to the MC group; the MSKFA tended to be higher in the PS group compared to the MC group. There was a significant fluctuation in KAA during the swing phase in the PS group compared to the MC group, PS patients showed a higher peak knee flexion moment compared to MC patients, and the PS group had significantly less peak internal rotation moments than the MC group. Conclusions: Modern, third-generation TKA designs failed to reproduce normal knee kinematics. MC knees tended to reproduce a more natural kinematic pattern at heel-strike and during axial rotation, while PS knees showed better kinematics during mid-flexion. MDPI 2021-03-15 /pmc/articles/PMC8006233/ /pubmed/33804113 http://dx.doi.org/10.3390/jfmk6010027 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ghirardelli, Stefano
Asay, Jessica L.
Leonardi, Erika A.
Amoroso, Tommaso
Andriacchi, Thomas P.
Indelli, Pier Francesco
Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs
title Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs
title_full Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs
title_fullStr Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs
title_full_unstemmed Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs
title_short Kinematic Comparison between Medially Congruent and Posterior-Stabilized Third-Generation TKA Designs
title_sort kinematic comparison between medially congruent and posterior-stabilized third-generation tka designs
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8006233/
https://www.ncbi.nlm.nih.gov/pubmed/33804113
http://dx.doi.org/10.3390/jfmk6010027
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