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A new method and instrumentation for analyzing spasticity

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2017
2439.pdf (1.747Mb)
Authors
Popović Maneski, Lana
Aleksić, Antonina
Čobeljić, Radoje
Bajd, Tadej
Popović, Dejan B.
Article (Published version)
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Abstract
The assessment of spasticity is an important indicator of the course of the recovery in humans with central nervous system lesion. This recovery may be augmented by optimal ergonomic design of wheelchairs, beds, transferring devices and other devices used in activities of daily life. To quantify the influence of different aids and methods in reduction or increase of spasticity, an objective measure is required. The pendulum test was introduced to induce the stretch of the muscle, thereby, trigger spastic response, and the amplitudes of first sinusoidal movements are used as the measure of spasticity. We present a new model of the lower leg during the pendulum test which includes the nonlinear characteristics of the muscles, and a model of the shank and foot that are customized to the patient. The spastic torque component is calculated based on acquired values of angular acceleration, angular velocity, and angle. We developed a new analysis methodology and tool to describe the level and... course of reflexive behavior. We describe the instrumentation for data acquisition. The kinematics is captured by two accelerometers, one gyroscope, and a Hall-effect joint angle encoder. Muscle activities of prime knee flexors and extensors are synchronously recorded. The simulation uses user's particular inertial parameters and data from repeated pendulum movements of the lower leg and outputs the reflexive torque. We developed the user-friendly software in MatLab for the analysis of data recorded with the new instrument. We present the application of the method in representative healthy subject and two spastic SCI patients. The main finding is that this method allows distinction between the flexion and extensions types of spasticity and the level of reflexive behavior.

Keywords:
spasticity / inertial measurement units / spinal cord injury
Source:
IETI Transactions on Ergonomics and Safety, 2017, 1, 1, 12-27
Publisher:
  • Hong Kong : IETI
Funding / projects:
  • Design of Robot as Assistive Technology in Treatement of Children with Developmental Disorders (RS-44008)
  • Research and development of ambient-intelligent service robots with anthropomorphic characteristics (RS-35003)

ISSN: 2520-5439

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_dais_2360
URI
https://dais.sanu.ac.rs/123456789/2360
http://ieti.net/TES/2017V1I103.html
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Popović Maneski, Lana
AU  - Aleksić, Antonina
AU  - Čobeljić, Radoje
AU  - Bajd, Tadej
AU  - Popović, Dejan B.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/2360
UR  - http://ieti.net/TES/2017V1I103.html
AB  - The assessment of spasticity is an important indicator of the course of the recovery in humans with central nervous system lesion. This recovery may be augmented by optimal ergonomic design of wheelchairs, beds, transferring devices and other devices used in activities of daily life. To quantify the influence of different aids and methods in reduction or increase of spasticity, an objective measure is required. The pendulum test was introduced to induce the stretch of the muscle, thereby, trigger spastic response, and the amplitudes of first sinusoidal movements are used as the measure of spasticity. We present a new model of the lower leg during the pendulum test which includes the nonlinear characteristics of the muscles, and a model of the shank and foot that are customized to the patient. The spastic torque component is calculated based on acquired values of angular acceleration, angular velocity, and angle. We developed a new analysis methodology and tool to describe the level and course of reflexive behavior. We describe the instrumentation for data acquisition. The kinematics is captured by two accelerometers, one gyroscope, and a Hall-effect joint angle encoder. Muscle activities of prime knee flexors and extensors are synchronously recorded. The simulation uses user's particular inertial parameters and data from repeated pendulum movements of the lower leg and outputs the reflexive torque. We developed the user-friendly software in MatLab for the analysis of data recorded with the new instrument. We present the application of the method in representative healthy subject and two spastic SCI patients. The main finding is that this method allows distinction between the flexion and extensions types of spasticity and the level of reflexive behavior.
PB  - Hong Kong : IETI
T2  - IETI Transactions on Ergonomics and Safety
T1  - A new method and instrumentation for analyzing spasticity
SP  - 12
EP  - 27
VL  - 1
IS  - 1
UR  - https://hdl.handle.net/21.15107/rcub_dais_2360
ER  - 
@article{
author = "Popović Maneski, Lana and Aleksić, Antonina and Čobeljić, Radoje and Bajd, Tadej and Popović, Dejan B.",
year = "2017",
abstract = "The assessment of spasticity is an important indicator of the course of the recovery in humans with central nervous system lesion. This recovery may be augmented by optimal ergonomic design of wheelchairs, beds, transferring devices and other devices used in activities of daily life. To quantify the influence of different aids and methods in reduction or increase of spasticity, an objective measure is required. The pendulum test was introduced to induce the stretch of the muscle, thereby, trigger spastic response, and the amplitudes of first sinusoidal movements are used as the measure of spasticity. We present a new model of the lower leg during the pendulum test which includes the nonlinear characteristics of the muscles, and a model of the shank and foot that are customized to the patient. The spastic torque component is calculated based on acquired values of angular acceleration, angular velocity, and angle. We developed a new analysis methodology and tool to describe the level and course of reflexive behavior. We describe the instrumentation for data acquisition. The kinematics is captured by two accelerometers, one gyroscope, and a Hall-effect joint angle encoder. Muscle activities of prime knee flexors and extensors are synchronously recorded. The simulation uses user's particular inertial parameters and data from repeated pendulum movements of the lower leg and outputs the reflexive torque. We developed the user-friendly software in MatLab for the analysis of data recorded with the new instrument. We present the application of the method in representative healthy subject and two spastic SCI patients. The main finding is that this method allows distinction between the flexion and extensions types of spasticity and the level of reflexive behavior.",
publisher = "Hong Kong : IETI",
journal = "IETI Transactions on Ergonomics and Safety",
title = "A new method and instrumentation for analyzing spasticity",
pages = "12-27",
volume = "1",
number = "1",
url = "https://hdl.handle.net/21.15107/rcub_dais_2360"
}
Popović Maneski, L., Aleksić, A., Čobeljić, R., Bajd, T.,& Popović, D. B.. (2017). A new method and instrumentation for analyzing spasticity. in IETI Transactions on Ergonomics and Safety
Hong Kong : IETI., 1(1), 12-27.
https://hdl.handle.net/21.15107/rcub_dais_2360
Popović Maneski L, Aleksić A, Čobeljić R, Bajd T, Popović DB. A new method and instrumentation for analyzing spasticity. in IETI Transactions on Ergonomics and Safety. 2017;1(1):12-27.
https://hdl.handle.net/21.15107/rcub_dais_2360 .
Popović Maneski, Lana, Aleksić, Antonina, Čobeljić, Radoje, Bajd, Tadej, Popović, Dejan B., "A new method and instrumentation for analyzing spasticity" in IETI Transactions on Ergonomics and Safety, 1, no. 1 (2017):12-27,
https://hdl.handle.net/21.15107/rcub_dais_2360 .

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