Validation of knee joint models - An in vivo study
(2010) 6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech In IFMBE Proceedings 31 IFMBE. p.1288-1291- Abstract
The effect of modeling the knee as a simple spherical or revolute joint during gait, cutting and hopping were evaluated. The results indicate that, even during gait, a revolute joint may be too restrictive in its representation of the knee, with flexion/extension errors as high as 9.4°. By imposing the spherical joint, joint angles showed consistent and strong correlations with the true joint angles for the functional tasks, although internal/external rotation angle were moderately affected (errors up to 4.2°). For both constraint types, the remaining Degrees of Freedom (DOF) were not consistent across subjects and must be considered unreliable, with translation errors of up to 11.0 mm with a spherical joint and 11.9 with a revolute... (More)
The effect of modeling the knee as a simple spherical or revolute joint during gait, cutting and hopping were evaluated. The results indicate that, even during gait, a revolute joint may be too restrictive in its representation of the knee, with flexion/extension errors as high as 9.4°. By imposing the spherical joint, joint angles showed consistent and strong correlations with the true joint angles for the functional tasks, although internal/external rotation angle were moderately affected (errors up to 4.2°). For both constraint types, the remaining Degrees of Freedom (DOF) were not consistent across subjects and must be considered unreliable, with translation errors of up to 11.0 mm with a spherical joint and 11.9 with a revolute joint. In conclusion, the results of this study suggest that inclusion of a spherical joint produced reliable results only for joint angles, yet significant bone translations were eliminated from the recovered motion. Furthermore, the constraints imposed flexion/extension errors of up to 4.4° with a spherical joint (observed during hopping) and 9.4° with a revolute joint (observed during gait). Although the joint DOF errors are generally smaller than those associated with soft tissue artefacts, they may still contribute to a significant source of error in the models when used.
(Less)
- author
- Andersen, M. S. ; Rasmussen, J. ; Ramsey, D. K. and Benoit, D. L. LU
- publishing date
- 2010
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- keywords
- in vivo, Kinematics, knee models, validation
- host publication
- 6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
- series title
- IFMBE Proceedings
- volume
- 31 IFMBE
- pages
- 1288 - 1291
- conference name
- 6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
- conference location
- Singapore, Singapore
- conference dates
- 2010-08-01 - 2010-08-06
- external identifiers
-
- scopus:77958015868
- ISSN
- 1680-0737
- ISBN
- 9783540790389
- DOI
- 10.1007/978-3-642-14515-5_327
- language
- English
- LU publication?
- no
- id
- dc9016cf-5e4b-47d5-aa2c-6c9c47447296
- date added to LUP
- 2023-08-24 16:33:05
- date last changed
- 2023-08-28 09:34:25
@inproceedings{dc9016cf-5e4b-47d5-aa2c-6c9c47447296,
abstract = {{<p>The effect of modeling the knee as a simple spherical or revolute joint during gait, cutting and hopping were evaluated. The results indicate that, even during gait, a revolute joint may be too restrictive in its representation of the knee, with flexion/extension errors as high as 9.4°. By imposing the spherical joint, joint angles showed consistent and strong correlations with the true joint angles for the functional tasks, although internal/external rotation angle were moderately affected (errors up to 4.2°). For both constraint types, the remaining Degrees of Freedom (DOF) were not consistent across subjects and must be considered unreliable, with translation errors of up to 11.0 mm with a spherical joint and 11.9 with a revolute joint. In conclusion, the results of this study suggest that inclusion of a spherical joint produced reliable results only for joint angles, yet significant bone translations were eliminated from the recovered motion. Furthermore, the constraints imposed flexion/extension errors of up to 4.4° with a spherical joint (observed during hopping) and 9.4° with a revolute joint (observed during gait). Although the joint DOF errors are generally smaller than those associated with soft tissue artefacts, they may still contribute to a significant source of error in the models when used.</p>}},
author = {{Andersen, M. S. and Rasmussen, J. and Ramsey, D. K. and Benoit, D. L.}},
booktitle = {{6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech}},
isbn = {{9783540790389}},
issn = {{1680-0737}},
keywords = {{in vivo; Kinematics; knee models; validation}},
language = {{eng}},
pages = {{1288--1291}},
series = {{IFMBE Proceedings}},
title = {{Validation of knee joint models - An in vivo study}},
url = {{http://dx.doi.org/10.1007/978-3-642-14515-5_327}},
doi = {{10.1007/978-3-642-14515-5_327}},
volume = {{31 IFMBE}},
year = {{2010}},
}