Do kinematic models reduce the effects of soft tissue artefacts in skin marker-based motion analysis? An in vivo study of knee kinematics
(2010) In Journal of Biomechanics 43(2). p.268-273- Abstract
We investigated the effects of including kinematic constraints in the analysis of knee kinematics from skin markers and compared the result to simultaneously recorded trajectories of bone pin markers during gait of six healthy subjects. The constraint equations that were considered for the knee were spherical and revolute joints, which have been frequently used in musculoskeletal modelling. In the models, the joint centres and joint axes of rotations were optimised from the skin marker trajectories over the trial. It was found that the introduction of kinematic constraints did not reduce the error associated with soft tissue artefacts. The inclusion of a revolute joint constraint showed a statistically significant increase in the mean... (More)
We investigated the effects of including kinematic constraints in the analysis of knee kinematics from skin markers and compared the result to simultaneously recorded trajectories of bone pin markers during gait of six healthy subjects. The constraint equations that were considered for the knee were spherical and revolute joints, which have been frequently used in musculoskeletal modelling. In the models, the joint centres and joint axes of rotations were optimised from the skin marker trajectories over the trial. It was found that the introduction of kinematic constraints did not reduce the error associated with soft tissue artefacts. The inclusion of a revolute joint constraint showed a statistically significant increase in the mean flexion/extension joint angle error and no statistically significant change for the two other mean joint angle errors. The inclusion of a spherical joint showed a statistically significant increase in the mean flexion/extension and abduction/adduction errors. In addition, when a spherical joint was included, a statistically significant increase in the sum of squared differences between measured marker trajectories and the trajectories of the pin markers in the models was seen. From this, it was concluded that both more advanced knee models as well as models of soft tissue artefacts should be developed before accurate knee kinematics can be calculated from skin markers.
(Less)
- author
- Andersen, Michael S. ; Benoit, Daniel L. LU ; Damsgaard, Michael ; Ramsey, Dan K. and Rasmussen, John
- publishing date
- 2010-01-19
- type
- Contribution to journal
- publication status
- published
- keywords
- In vivo, Kinematic analysis, Knee kinematics, Motion capture, Soft tissue artefacts
- in
- Journal of Biomechanics
- volume
- 43
- issue
- 2
- pages
- 268 - 273
- publisher
- Elsevier
- external identifiers
-
- scopus:72249116540
- pmid:19879581
- ISSN
- 0021-9290
- DOI
- 10.1016/j.jbiomech.2009.08.034
- language
- English
- LU publication?
- no
- id
- d5649793-ffd7-4a38-b1f8-236f8e98cf08
- date added to LUP
- 2023-08-24 16:47:01
- date last changed
- 2025-06-15 16:42:32
@article{d5649793-ffd7-4a38-b1f8-236f8e98cf08,
abstract = {{<p>We investigated the effects of including kinematic constraints in the analysis of knee kinematics from skin markers and compared the result to simultaneously recorded trajectories of bone pin markers during gait of six healthy subjects. The constraint equations that were considered for the knee were spherical and revolute joints, which have been frequently used in musculoskeletal modelling. In the models, the joint centres and joint axes of rotations were optimised from the skin marker trajectories over the trial. It was found that the introduction of kinematic constraints did not reduce the error associated with soft tissue artefacts. The inclusion of a revolute joint constraint showed a statistically significant increase in the mean flexion/extension joint angle error and no statistically significant change for the two other mean joint angle errors. The inclusion of a spherical joint showed a statistically significant increase in the mean flexion/extension and abduction/adduction errors. In addition, when a spherical joint was included, a statistically significant increase in the sum of squared differences between measured marker trajectories and the trajectories of the pin markers in the models was seen. From this, it was concluded that both more advanced knee models as well as models of soft tissue artefacts should be developed before accurate knee kinematics can be calculated from skin markers.</p>}},
author = {{Andersen, Michael S. and Benoit, Daniel L. and Damsgaard, Michael and Ramsey, Dan K. and Rasmussen, John}},
issn = {{0021-9290}},
keywords = {{In vivo; Kinematic analysis; Knee kinematics; Motion capture; Soft tissue artefacts}},
language = {{eng}},
month = {{01}},
number = {{2}},
pages = {{268--273}},
publisher = {{Elsevier}},
series = {{Journal of Biomechanics}},
title = {{Do kinematic models reduce the effects of soft tissue artefacts in skin marker-based motion analysis? An in vivo study of knee kinematics}},
url = {{http://dx.doi.org/10.1016/j.jbiomech.2009.08.034}},
doi = {{10.1016/j.jbiomech.2009.08.034}},
volume = {{43}},
year = {{2010}},
}