In Vivo Dynamics of the Musculoskeletal System Cannot Be Adequately Described Using a Stiffness-Damping-Inertia Model
2011

Musculoskeletal System Dynamics and KBI Models

publication Evidence: low

Author Information

Author(s): Kistemaker Dinant A., Rozendaal Leonard A.

Hypothesis

The study aims to analyze the relationship between musculoskeletal properties and stiffness and damping estimated using a KBI-model.

Conclusion

The study concludes that KBI-models do not accurately represent the dynamical parameters of the musculoskeletal system.

Supporting Evidence

  • The estimated stiffness and damping do not resemble any of the dynamical parameters of the underlying system.
  • Stiffness and damping depend non-linearly on all dynamical parameters of the underlying system.
  • The estimated parameters are highly sensitive to measurement errors.

Takeaway

This study shows that using a simple model to understand how our muscles and bones work together might not give us the right answers.

Methodology

The study used a musculoskeletal model to assess the validity of KBI-approach for estimating stiffness and damping.

Potential Biases

The study highlights the high sensitivity of estimated parameters to measurement errors.

Limitations

The model used is a simplification and does not account for all dynamics of the real musculoskeletal system.

Digital Object Identifier (DOI)

10.1371/journal.pone.0019568

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