Abstract
Knee joint weakness and disorders are extremely common; with development of a new methodology for early detection of knee disorders in mind, various dynamics tests have been conducted. Subjects were requested to perform exercises of certain patterns including squats and marching at a constant rate for 70 (s). A force plate, acoustic sensor, and set of electromyographic (EMG) sensors were used to measure the ground reaction force and torque to the foot, the vibration from the knee cavity, and the electrical activity of muscles. The acquired signals were analyzed in the frequency domain to associate with certain biomechanical parameters. Preliminary studies indicated clear correlations between several features of the Fourier spectra and biomechanical parameters. The force and torque signals from a knee with a torn meniscus showed considerable broadening in the Fourier spectra around the peak of the exercise frequency (e.g. the 1 Hz peak of the torque associated with the knee extension from 1 Hz marching) and higher transfer function to other degrees of freedom, indicating instability of the injured knee. The acoustic sensor signal from an arthritic knee indicated significant attenuation due to the fluid in the knee cavity, leading to the extremely poorly defined spectral feature. The femoral efficiency, defined by the transfer function from the EMG signal to the force/torque of the dominant degree-of-freedom, showed clear correlation to fatigue in the amplitude and frequency.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Arden, N., Nevitt, M.C.: Osteoarthritis epidemiology. Clin. Rheumetol. 20, 3–35 (2006)
Tiwari, U., Yoshida, S., Saladino, A., Hadley,B., Nguyen, M., Hatchett, J., Hollander, D.: Study of knee joints with spectral analysis. In: 82nd Annual Meeting of the APS Southeastern Section, 60(18), Mobile, 18–21 November 2015
Saladino, A.: Framework for analysis of knee joint sound signals and muscle strength for non-invasive early detection of knee joint conditions. Master’s Thesis, Integrated Science and Technology Program, Southeastern Louisiana University (2015)
BIOPAC, Systems, Inc.: https://www.biopac.com/
DELSYS, Inc.: http://www.delsys.com/
Viitasalo, J.H.T., Komi, P.V.: Signal characteristics of EMG during fatigue. Eur. J. Appl. Physiol. Occup. Physiol. 37(2), 111–121 (1977)
Acknowledgement
The authors are grateful to Jesse Hatchet for his support in hardware conditioning and software installation.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 The Society for Experimental Mechanics, Inc.
About this paper
Cite this paper
Yoshida, S. et al. (2017). Dynamic Analysis of Human Knee. In: Korach, C., Tekalur, S., Zavattieri, P. (eds) Mechanics of Biological Systems and Materials, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-41351-8_4
Download citation
DOI: https://doi.org/10.1007/978-3-319-41351-8_4
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-41350-1
Online ISBN: 978-3-319-41351-8
eBook Packages: EngineeringEngineering (R0)