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Pendulum test: Quantified assessment of the type and level of spasticity in persons with central nervous system lesions

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2018
Popovi-DB_Pendulum-test-Quantified-assessment-of-the-type-and-level-of-spasticity-in-persons-with-central-nervous-system-lesions_2018.pdf (1.603Mb)
Authors
Popović, Dejan B.
Bajd, Tadej
Article (Published version)
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Abstract
The development of a comprehensive computational model of the pendulum test which is appropriate for the analysis of the pathologic behavior of the leg in humans with the central nervous system (CNS) lesion is presented in this review. The model relates to the pendulum movement of the lower leg (shank and the foot) in the lateral plane due to the gravity and involuntary contractions of the muscles. The viscous damping and elastic stiffness reflect the soft tissues and friction in the knee joint. To quantify the pathologic activity of paralyzed muscles a reflex torque was added to the gravity generated knee joint torque. The knee joint encoder, accelerometers and gyroscopes positioned along the shank and thigh, and EMG amplifiers were used to acquire data for the illustration of the validity of the model. We show that the linear model of the movement of the lower leg is not a good representation of the motor impairment. We show that the model expanded with the reflex torque affecting th...e movement is well suited for the pendulum analysis. The timing of the reflex torques can be determined from the EMG recordings. © Serbian Journal of Electrical Engineering. 2018.

Keywords:
nonlinear pendulum model / pendulum test / spasticity / three-component muscle model
Source:
Serbian Journal of Electrical Engineering, 2018, 15, 1, 1-12
Publisher:
  • Kragujevac : University of Kragujevac, Faculty of Science
Projects:
  • Research and development of ambient-intelligent service robots with anthropomorphic characteristics (RS-35003)

DOI: 10.2298/SJEE171204006P

ISSN: 1451-4869

Scopus: 2-s2.0-85042791178
[ Google Scholar ]
1
URI
http://dais.sanu.ac.rs/123456789/3745
Collections
  • Општа колекција САНУ / General collection of SASA
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Popović, Dejan B.
AU  - Bajd, Tadej
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3745
AB  - The development of a comprehensive computational model of the pendulum test which is appropriate for the analysis of the pathologic behavior of the leg in humans with the central nervous system (CNS) lesion is presented in this review. The model relates to the pendulum movement of the lower leg (shank and the foot) in the lateral plane due to the gravity and involuntary contractions of the muscles. The viscous damping and elastic stiffness reflect the soft tissues and friction in the knee joint. To quantify the pathologic activity of paralyzed muscles a reflex torque was added to the gravity generated knee joint torque. The knee joint encoder, accelerometers and gyroscopes positioned along the shank and thigh, and EMG amplifiers were used to acquire data for the illustration of the validity of the model. We show that the linear model of the movement of the lower leg is not a good representation of the motor impairment. We show that the model expanded with the reflex torque affecting the movement is well suited for the pendulum analysis. The timing of the reflex torques can be determined from the EMG recordings. © Serbian Journal of Electrical Engineering. 2018.
PB  - Kragujevac : University of Kragujevac, Faculty of Science
T2  - Serbian Journal of Electrical Engineering
T1  - Pendulum test: Quantified assessment of the type and level of spasticity in persons with central nervous system lesions
SP  - 1
EP  - 12
VL  - 15
IS  - 1
DO  - 10.2298/SJEE171204006P
ER  - 
@article{
author = "Popović, Dejan B. and Bajd, Tadej",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3745",
abstract = "The development of a comprehensive computational model of the pendulum test which is appropriate for the analysis of the pathologic behavior of the leg in humans with the central nervous system (CNS) lesion is presented in this review. The model relates to the pendulum movement of the lower leg (shank and the foot) in the lateral plane due to the gravity and involuntary contractions of the muscles. The viscous damping and elastic stiffness reflect the soft tissues and friction in the knee joint. To quantify the pathologic activity of paralyzed muscles a reflex torque was added to the gravity generated knee joint torque. The knee joint encoder, accelerometers and gyroscopes positioned along the shank and thigh, and EMG amplifiers were used to acquire data for the illustration of the validity of the model. We show that the linear model of the movement of the lower leg is not a good representation of the motor impairment. We show that the model expanded with the reflex torque affecting the movement is well suited for the pendulum analysis. The timing of the reflex torques can be determined from the EMG recordings. © Serbian Journal of Electrical Engineering. 2018.",
publisher = "Kragujevac : University of Kragujevac, Faculty of Science",
journal = "Serbian Journal of Electrical Engineering",
title = "Pendulum test: Quantified assessment of the type and level of spasticity in persons with central nervous system lesions",
pages = "1-12",
volume = "15",
number = "1",
doi = "10.2298/SJEE171204006P"
}
Popović DB, Bajd T. Pendulum test: Quantified assessment of the type and level of spasticity in persons with central nervous system lesions. Serbian Journal of Electrical Engineering. 2018;15(1):1-12
Popović, D. B.,& Bajd, T. (2018). Pendulum test: Quantified assessment of the type and level of spasticity in persons with central nervous system lesions.
Serbian Journal of Electrical EngineeringKragujevac : University of Kragujevac, Faculty of Science., 15(1), 1-12. 
https://doi.org/10.2298/SJEE171204006P
Popović Dejan B., Bajd Tadej, "Pendulum test: Quantified assessment of the type and level of spasticity in persons with central nervous system lesions" 15, no. 1 (2018):1-12,
https://doi.org/10.2298/SJEE171204006P .

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