A simple controller for the prediction of three-dimensional gait
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| Title: | A simple controller for the prediction of three-dimensional gait |
|---|---|
| Authors: | Fluit, R.1 r.fluit@ctw.utwente.nl, van der Krogt, M.M.1,2, van der Kooij, H.1,3, Verdonschot, N.1,4, Koopman, H.F.J.M.1 |
| Source: | Journal of Biomechanics. Oct2012, Vol. 45 Issue 15, p2610-2617. 8p. |
| Subjects: | Gait disorders, Orthopedic surgery complications, Dynamic models, Health outcome assessment, Osteotomy, Musculoskeletal system |
| Abstract: | Abstract: The objective of this study is to investigate the potential of forward dynamic modeling in predicting the functional outcome of complicated orthopedic procedures involving relocation or removal of muscles or correction osteotomies in the lower extremities. For this purpose, we developed a torque actuated forward dynamics based three-dimensional model of gait, that extends the previous reported work of Van der Kooij et al. (2003). The mechanical properties are scaled to the subject and lateral stability is provided by an ‘offset plus proportional’ controller (Hof, 2008). Kinematic constraints are formulated based on three independent gait descriptors and implemented in an optimization algorithm. The computational effort is small (1min per gait cycle on a 1GHz processor) and the control scheme generates symmetric and cyclic gait based on the desired gait descriptors. An interface with the inverse dynamics based AnyBody Modeling System, a musculoskeletal modeling tool, provides insight in muscle activities. The proposed control scheme is robust against mediolateral perturbations. The predictive capacity of the model is evaluated by simulating pathological gait by means of weakening the hip abductors, and the model is able to predict some of the trends of compensatory strategies in such a perturbed mechanical system. [Copyright &y& Elsevier] |
| Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 82064427 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A simple controller for the prediction of three-dimensional gait – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fluit%2C+R%2E%22">Fluit, R.</searchLink><relatesTo>1</relatesTo><i> r.fluit@ctw.utwente.nl</i><br /><searchLink fieldCode="AR" term="%22van+der+Krogt%2C+M%2EM%2E%22">van der Krogt, M.M.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22van+der+Kooij%2C+H%2E%22">van der Kooij, H.</searchLink><relatesTo>1,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Verdonschot%2C+N%2E%22">Verdonschot, N.</searchLink><relatesTo>1,4</relatesTo><br /><searchLink fieldCode="AR" term="%22Koopman%2C+H%2EF%2EJ%2EM%2E%22">Koopman, H.F.J.M.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Biomechanics%22">Journal of Biomechanics</searchLink>. Oct2012, Vol. 45 Issue 15, p2610-2617. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Gait+disorders%22">Gait disorders</searchLink><br /><searchLink fieldCode="DE" term="%22Orthopedic+surgery+complications%22">Orthopedic surgery complications</searchLink><br /><searchLink fieldCode="DE" term="%22Dynamic+models%22">Dynamic models</searchLink><br /><searchLink fieldCode="DE" term="%22Health+outcome+assessment%22">Health outcome assessment</searchLink><br /><searchLink fieldCode="DE" term="%22Osteotomy%22">Osteotomy</searchLink><br /><searchLink fieldCode="DE" term="%22Musculoskeletal+system%22">Musculoskeletal system</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The objective of this study is to investigate the potential of forward dynamic modeling in predicting the functional outcome of complicated orthopedic procedures involving relocation or removal of muscles or correction osteotomies in the lower extremities. For this purpose, we developed a torque actuated forward dynamics based three-dimensional model of gait, that extends the previous reported work of Van der Kooij et al. (2003). The mechanical properties are scaled to the subject and lateral stability is provided by an ‘offset plus proportional’ controller (Hof, 2008). Kinematic constraints are formulated based on three independent gait descriptors and implemented in an optimization algorithm. The computational effort is small (1min per gait cycle on a 1GHz processor) and the control scheme generates symmetric and cyclic gait based on the desired gait descriptors. An interface with the inverse dynamics based AnyBody Modeling System, a musculoskeletal modeling tool, provides insight in muscle activities. The proposed control scheme is robust against mediolateral perturbations. The predictive capacity of the model is evaluated by simulating pathological gait by means of weakening the hip abductors, and the model is able to predict some of the trends of compensatory strategies in such a perturbed mechanical system. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Biomechanics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jbiomech.2012.08.019 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 2610 Subjects: – SubjectFull: Gait disorders Type: general – SubjectFull: Orthopedic surgery complications Type: general – SubjectFull: Dynamic models Type: general – SubjectFull: Health outcome assessment Type: general – SubjectFull: Osteotomy Type: general – SubjectFull: Musculoskeletal system Type: general Titles: – TitleFull: A simple controller for the prediction of three-dimensional gait Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fluit, R. – PersonEntity: Name: NameFull: van der Krogt, M.M. – PersonEntity: Name: NameFull: van der Kooij, H. – PersonEntity: Name: NameFull: Verdonschot, N. – PersonEntity: Name: NameFull: Koopman, H.F.J.M. IsPartOfRelationships: – BibEntity: Dates: – D: 11 M: 10 Text: Oct2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 00219290 Numbering: – Type: volume Value: 45 – Type: issue Value: 15 Titles: – TitleFull: Journal of Biomechanics Type: main |
| ResultId | 1 |
