Biomechanical model of human leg motion

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dc.contributor.advisorJin, Yufang
dc.contributor.authorBird, Marcos Allen
dc.contributor.committeeMemberQian, Chunjiang
dc.contributor.committeeMemberHan, Hai-Chao
dc.date.accessioned2024-02-09T19:29:49Z
dc.date.available2024-02-09T19:29:49Z
dc.date.issued2009
dc.description.abstractEach year, around 6 million Americans visit either orthopedic surgeons or emergency rooms due to knee problems, and rehabilitation of the knee joint costs $470 million annually in the US. Such extremely high cost demands an auxiliary device, a rehabilitation robot, to facilitate the recuperation of the knee and requires a good description of limb motion. To reduce the cost of recuperation by limiting physical therapy sessions, an intelligent brace enabling accurate positioning of the impaired limb while simultaneously providing assistance or resistance forces to assist the patient's movements is needed. Development of the rehabilitation robot requires a good description of limb motion. Extensive research has been carried out to investigate the biomechanical properties of muscles, ligaments, and bones in static situation. Previous studies have also characterized effects of leg swing on the stability of running motion and the motion profiles of the human leg during walking or jumping. However, the dynamic motion profiles have not linked the model parameters to measured biomechanical properties of muscles, ligaments, and knee damping. Accordingly, in this study we have developed a mathematical model of human leg motion using Lagrangian mechanics to describe dynamic motion profiles of the human leg. The mathematical model used mechanical components such as springs, links, and dashpots to approximate the biological components within the leg. The model parameters are chosen based on published biological experiments. The mathematical model was simulated with MATLAB and validated via comparison of the model predictions against real human leg motion profiles. Our mathematical model can predict the motion profiles of human leg motion and provides a foundation for the development of a rehabilitation robot to assist patient recovery from knee surgery and replacement.
dc.description.departmentElectrical and Computer Engineering
dc.format.extent67 pages
dc.format.mimetypeapplication/pdf
dc.identifier.isbn9781109540321
dc.identifier.urihttps://hdl.handle.net/20.500.12588/3002
dc.languageen
dc.subjectbiomechanical
dc.subjectdynamic
dc.subjectleg
dc.subjectmodel
dc.subjectrehabilitation
dc.subjectviscoelastic
dc.subject.classificationBiomedical engineering
dc.subject.classificationElectrical engineering
dc.subject.classificationMechanical engineering
dc.subject.classificationMechanics
dc.subject.lcshLeg -- Mechanical properties
dc.subject.lcshLeg -- Anatomy
dc.subject.lcshKnee -- Mechanical properties
dc.subject.lcshKnee -- Anatomy
dc.subject.lcshHuman mechanics -- Mathematical models
dc.subject.lcshKinesiology
dc.titleBiomechanical model of human leg motion
dc.typeThesis
dc.type.dcmiText
dcterms.accessRightspq_closed
thesis.degree.departmentElectrical and Computer Engineering
thesis.degree.grantorUniversity of Texas at San Antonio
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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