Improvement of musculoskeletal model inputs : adjustment of acceleration by dynamic optimisation

Leboeuf, FY; Colloud, F

Abstract

The knowledge of intrinsic dynamics in terms of
joint torques and muscle tensions is of importance
for clinical investigations. The common process is
to solve a multibody inverse dynamic problem
based on a set of iterative equations using noisy
experimental data as guest. Body segment
accelerations are usually assessed by double
differentiation, a method well-known to amplify
kinematic measurement noise. As a result, iterative
equations propagate uncertainties leading to
inconsistencies between measured external force
and the rate of change of linear momentum.
Recent studies addressed this residual force
problem by adjusting mass distribution while they
calculate force tensions or by dealing with
acceleration computation. However, these
different approaches were based on a least-square
problem still leading to approximate intrinsic
dynamics.
The aim of this communication is to compute joint
accelerations by solving a dynamic optimization
problem. We will examine the effect of the optimal
adjustment on joint torques and muscle tensions.

Citation

Leboeuf, F., & Colloud, F. (2012). Improvement of musculoskeletal model inputs : adjustment of acceleration by dynamic optimisation. Computer Methods in Biomechanics and Biomedical Engineering, 15(Sup_1), 186-188. https://doi.org/10.1080/10255842.2012.713693

• Journal Article Type: Article
• Online Publication Date: Sep 26, 2012
• Publication Date: Sep 26, 2012
• Deposit Date: Oct 5, 2018
• Publicly Available Date: Oct 5, 2018
• Journal: Computer Methods in Biomechanics and Biomedical Engineering
• Print ISSN: 1025-5842
• Electronic ISSN: 1476-8259
• Publisher: Taylor and Francis
• Volume: 15
• Issue: Sup_1
• Pages: 186-188
• DOI: https://doi.org/10.1080/10255842.2012.713693
• Keywords: acceleration,connecting point,considering that at each,coordinates Ý�,derived from measurement,dynamic optimization,inverse dynamics,muscle tension,static optimization,the joint,the link,Ü¿,Ý�,ଵ ߬,ଶ ߬ ଶ,ଷ ߬ ଷ,ସ ߬ ସ,á�ºÝ�á�»
• Publisher URL: https://doi.org/10.1080/10255842.2012.713693
• Related Public URLs: https://www.tandfonline.com/toc/gcmb20/current