Real-Time Knee Adduction Moment Feedback for Gait Retraining Through Visual and Tactile Displays

Handle URI:
http://hdl.handle.net/10754/599455
Title:
Real-Time Knee Adduction Moment Feedback for Gait Retraining Through Visual and Tactile Displays
Authors:
Wheeler, Jason W.; Shull, Pete B.; Besier, Thor F.
Abstract:
The external knee adduction moment (KAM) measured during gait is an indicator of tibiofemoral joint osteoarthritis progression and various strategies have been proposed to lower it. Gait retraining has been shown to be an effective, noninvasive approach for lowering the KAM. We present a new gait retraining approach in which the KAM is fed back to subjects in real-time during ambulation. A study was conducted in which 16 healthy subjects learned to alter gait patterns to lower the KAM through visual or tactile (vibration) feedback. Participants converged on a comfortable gait in just a few minutes by using the feedback to iterate on various kinematic modifications. All subjects adopted altered gait patterns with lower KAM compared with normal ambulation (average reduction of 20.7%). Tactile and visual feedbacks were equally effective for real-time training, although subjects using tactile feedback took longer to converge on an acceptable gait. This study shows that real-time feedback of the KAM can greatly increase the effectiveness and efficiency of subject-specific gait retraining compared with conventional methods. © 2011 American Society of Mechanical Engineers.
Citation:
Wheeler JW, Shull PB, Besier TF (2011) Real-Time Knee Adduction Moment Feedback for Gait Retraining Through Visual and Tactile Displays. J Biomech Eng 133: 041007. Available: http://dx.doi.org/10.1115/1.4003621.
Publisher:
ASME International
Journal:
Journal of Biomechanical Engineering
Issue Date:
2011
DOI:
10.1115/1.4003621
PubMed ID:
21428681
Type:
Article
ISSN:
0148-0731
Sponsors:
The authors would like to thank Scott Delp and Mark Cutkoskyfor their input on the study. J. Wheeler was funded by SandiaNational Laboratories Doctoral Studies Program. P. Shull was partiallyfunded by the King Abdullah University of Science andTechnology.
Appears in Collections:
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Full metadata record

DC FieldValue Language
dc.contributor.authorWheeler, Jason W.en
dc.contributor.authorShull, Pete B.en
dc.contributor.authorBesier, Thor F.en
dc.date.accessioned2016-02-28T05:51:27Zen
dc.date.available2016-02-28T05:51:27Zen
dc.date.issued2011en
dc.identifier.citationWheeler JW, Shull PB, Besier TF (2011) Real-Time Knee Adduction Moment Feedback for Gait Retraining Through Visual and Tactile Displays. J Biomech Eng 133: 041007. Available: http://dx.doi.org/10.1115/1.4003621.en
dc.identifier.issn0148-0731en
dc.identifier.pmid21428681en
dc.identifier.doi10.1115/1.4003621en
dc.identifier.urihttp://hdl.handle.net/10754/599455en
dc.description.abstractThe external knee adduction moment (KAM) measured during gait is an indicator of tibiofemoral joint osteoarthritis progression and various strategies have been proposed to lower it. Gait retraining has been shown to be an effective, noninvasive approach for lowering the KAM. We present a new gait retraining approach in which the KAM is fed back to subjects in real-time during ambulation. A study was conducted in which 16 healthy subjects learned to alter gait patterns to lower the KAM through visual or tactile (vibration) feedback. Participants converged on a comfortable gait in just a few minutes by using the feedback to iterate on various kinematic modifications. All subjects adopted altered gait patterns with lower KAM compared with normal ambulation (average reduction of 20.7%). Tactile and visual feedbacks were equally effective for real-time training, although subjects using tactile feedback took longer to converge on an acceptable gait. This study shows that real-time feedback of the KAM can greatly increase the effectiveness and efficiency of subject-specific gait retraining compared with conventional methods. © 2011 American Society of Mechanical Engineers.en
dc.description.sponsorshipThe authors would like to thank Scott Delp and Mark Cutkoskyfor their input on the study. J. Wheeler was funded by SandiaNational Laboratories Doctoral Studies Program. P. Shull was partiallyfunded by the King Abdullah University of Science andTechnology.en
dc.publisherASME Internationalen
dc.subjectGait retrainingen
dc.subjectKnee adduction momenten
dc.subjectOsteoarthritisen
dc.subjectReal-time feedbacken
dc.titleReal-Time Knee Adduction Moment Feedback for Gait Retraining Through Visual and Tactile Displaysen
dc.typeArticleen
dc.identifier.journalJournal of Biomechanical Engineeringen
dc.contributor.institutionSandia National Laboratories, New Mexico, Albuquerque, United Statesen
dc.contributor.institutionStanford University, Palo Alto, United Statesen

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