Muscle force modification strategies are not consistent for gait retraining to reduce the knee adduction moment in individuals with knee osteoarthritis.
Identifieur interne : 000709 ( Main/Merge ); précédent : 000708; suivant : 000710Muscle force modification strategies are not consistent for gait retraining to reduce the knee adduction moment in individuals with knee osteoarthritis.
Auteurs : Peter B. Shull [République populaire de Chine] ; Yangjian Huang [République populaire de Chine] ; Taylor Schlotman [États-Unis] ; Jeffrey A. Reinbolt [États-Unis]Source :
- Journal of biomechanics [ 1873-2380 ] ; 2015.
English descriptors
- KwdEn :
- MESH :
- physiopathology : Knee Joint, Muscle, Skeletal, Osteoarthritis, Knee.
- therapy : Osteoarthritis, Knee.
- Aged, Biomechanical Phenomena, Female, Gait, Humans, Male, Middle Aged, Muscle Strength, Physical Therapy Modalities, Walking.
Abstract
While gait retraining paradigms that alter knee loads typically focus on modifying kinematics, the underlying muscle force modifications responsible for these kinematic changes remain largely unknown. As humans are generally thought to select uniform gait muscle patterns such as strategies based on fatigue cost functions or energy minimization, we hypothesized that a kinematic gait change known to reduce the knee adduction moment (i.e. toe-in gait) would be accompanied by a uniform muscle force modification strategy for individuals with symptomatic knee osteoarthritis. Ten subjects with self-reported knee pain and radiographic evidence of medial compartment knee osteoarthritis performed normal gait and toe-in gait modification walking trials. Two hundred muscle-actuated dynamic simulations (10 steps for normal gait and 10 steps from toe-in gait for each subject) were performed to determine muscle forces for each gait. Results showed that subjects internally rotated their feet during toe-in gait, which decreased the foot progression angle by 7° (p<0.01) and reduced the first peak knee adduction moment by 20% (p<0.01). While significant muscle force modifications were evidenced within individuals, there were no consistent muscle force modifications across all subjects. It may be that self-selected muscle pattern changes are not uniform for gait modification particularly for individuals with knee pain. Future studies focused on altering knee loads should not assume consistent muscle force modifications for a given kinematic gait change across subjects and should consider muscle forces in addition to kinematics in gait retraining paradigms.
DOI: 10.1016/j.jbiomech.2015.07.006
PubMed: 26209875
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Electronic address: pshull@sjtu.edu.cn.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240</wicri:regionArea><wicri:noRegion>Shanghai 200240</wicri:noRegion></affiliation></author><author><name sortKey="Huang, Yangjian" sort="Huang, Yangjian" uniqKey="Huang Y" first="Yangjian" last="Huang">Yangjian Huang</name><affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240</wicri:regionArea><wicri:noRegion>Shanghai 200240</wicri:noRegion></affiliation></author><author><name sortKey="Schlotman, Taylor" sort="Schlotman, Taylor" uniqKey="Schlotman T" first="Taylor" last="Schlotman">Taylor Schlotman</name><affiliation wicri:level="2"><nlm:affiliation>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN</wicri:regionArea><placeName><region type="state">Tennessee</region></placeName></affiliation></author><author><name sortKey="Reinbolt, Jeffrey A" sort="Reinbolt, Jeffrey A" uniqKey="Reinbolt J" first="Jeffrey A" last="Reinbolt">Jeffrey A. Reinbolt</name><affiliation wicri:level="2"><nlm:affiliation>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN</wicri:regionArea><placeName><region type="state">Tennessee</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2015">2015</date><idno type="RBID">pubmed:26209875</idno><idno type="pmid">26209875</idno><idno type="doi">10.1016/j.jbiomech.2015.07.006</idno><idno type="wicri:Area/PubMed/Corpus">000288</idno><idno type="wicri:Area/PubMed/Curation">000288</idno><idno type="wicri:Area/PubMed/Checkpoint">000293</idno><idno type="wicri:Area/Ncbi/Merge">003B15</idno><idno type="wicri:Area/Ncbi/Curation">003B15</idno><idno type="wicri:Area/Ncbi/Checkpoint">003B15</idno><idno type="wicri:Area/Main/Merge">000709</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Muscle force modification strategies are not consistent for gait retraining to reduce the knee adduction moment in individuals with knee osteoarthritis.</title><author><name sortKey="Shull, Peter B" sort="Shull, Peter B" uniqKey="Shull P" first="Peter B" last="Shull">Peter B. Shull</name><affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address: pshull@sjtu.edu.cn.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240</wicri:regionArea><wicri:noRegion>Shanghai 200240</wicri:noRegion></affiliation></author><author><name sortKey="Huang, Yangjian" sort="Huang, Yangjian" uniqKey="Huang Y" first="Yangjian" last="Huang">Yangjian Huang</name><affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240</wicri:regionArea><wicri:noRegion>Shanghai 200240</wicri:noRegion></affiliation></author><author><name sortKey="Schlotman, Taylor" sort="Schlotman, Taylor" uniqKey="Schlotman T" first="Taylor" last="Schlotman">Taylor Schlotman</name><affiliation wicri:level="2"><nlm:affiliation>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN</wicri:regionArea><placeName><region type="state">Tennessee</region></placeName></affiliation></author><author><name sortKey="Reinbolt, Jeffrey A" sort="Reinbolt, Jeffrey A" uniqKey="Reinbolt J" first="Jeffrey A" last="Reinbolt">Jeffrey A. Reinbolt</name><affiliation wicri:level="2"><nlm:affiliation>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Mechanical Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN</wicri:regionArea><placeName><region type="state">Tennessee</region></placeName></affiliation></author></analytic><series><title level="j">Journal of biomechanics</title><idno type="eISSN">1873-2380</idno><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Biomechanical Phenomena</term><term>Female</term><term>Gait</term><term>Humans</term><term>Knee Joint (physiopathology)</term><term>Male</term><term>Middle Aged</term><term>Muscle Strength</term><term>Muscle, Skeletal (physiopathology)</term><term>Osteoarthritis, Knee (physiopathology)</term><term>Osteoarthritis, Knee (therapy)</term><term>Physical Therapy Modalities</term><term>Walking</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Knee Joint</term><term>Muscle, Skeletal</term><term>Osteoarthritis, Knee</term></keywords><keywords scheme="MESH" qualifier="therapy" xml:lang="en"><term>Osteoarthritis, Knee</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Biomechanical Phenomena</term><term>Female</term><term>Gait</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Muscle Strength</term><term>Physical Therapy Modalities</term><term>Walking</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">While gait retraining paradigms that alter knee loads typically focus on modifying kinematics, the underlying muscle force modifications responsible for these kinematic changes remain largely unknown. As humans are generally thought to select uniform gait muscle patterns such as strategies based on fatigue cost functions or energy minimization, we hypothesized that a kinematic gait change known to reduce the knee adduction moment (i.e. toe-in gait) would be accompanied by a uniform muscle force modification strategy for individuals with symptomatic knee osteoarthritis. Ten subjects with self-reported knee pain and radiographic evidence of medial compartment knee osteoarthritis performed normal gait and toe-in gait modification walking trials. Two hundred muscle-actuated dynamic simulations (10 steps for normal gait and 10 steps from toe-in gait for each subject) were performed to determine muscle forces for each gait. Results showed that subjects internally rotated their feet during toe-in gait, which decreased the foot progression angle by 7° (p<0.01) and reduced the first peak knee adduction moment by 20% (p<0.01). While significant muscle force modifications were evidenced within individuals, there were no consistent muscle force modifications across all subjects. It may be that self-selected muscle pattern changes are not uniform for gait modification particularly for individuals with knee pain. Future studies focused on altering knee loads should not assume consistent muscle force modifications for a given kinematic gait change across subjects and should consider muscle forces in addition to kinematics in gait retraining paradigms.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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