The aim of this study is to investigate lower limb muscles after cerebrovascular accident
The aim of this study is to define and differentiate the changes in MMT properties related to the alterations in muscle tone of the lower limb in first-ever chronic stroke patients by using a 3D free-hand Ultrasonography (3DfUS) technique in combination with an instrumented spasticity assessment (IPSA). In these chronic stroke patients, the spontaneous neurological recovery is stabilized
Study Type
OBSERVATIONAL
Enrollment
76
1. 3DfUS technique enhances a conventional 2D US device into a platform capable of reconstructing 3D anatomical data sets. 2. IPSA for quantification of hyper-resistance and its underlying components. The sensors in the IPSa include gyroscopes and accelerometers to measure joint angle and angular velocity, EMG to measure muscle activity, and a 3 degrees-of freedom force sensor to measure torque applied on the joint. 3. clinical functional capacity = clinical evaluation of degree of independence, mobility and gait
UZ Leuven
Leuven, Belgium
Muscle volume
Estimation of muscle volume by 3D freehand ultrasonography.
Time frame: 1 day
Muscle and Tendon Length
Estimation of muscle volume by 3D freehand ultrasonography
Time frame: 1 day
Echogenicity intensity
Estimation of echogenicity intensity by 3D freehand ultrasonography on an 8-bit greyscale (256 values).
Time frame: 1 day
Work [J] derived from the slow stretch
Measurement of Work \[J\] by Instrumented Spasticity Assessment
Time frame: 1 day
Muscle activity EMG [uV] derived from the fast stretch
Measurement of Muscle activity EMG \[uV\] by Instrumented Spasticity Assessment
Time frame: 1 day
Maximal velocity of performance (Vmax [deg/s])
Measurement of Maximal velocity of performance (Vmax \[deg/s\]) by Instrumented Spasticity Assessment
Time frame: 1 day
Range of motion [deg] for slow stretch
Measurement of Range of motion \[deg\] by Instrumented Spasticity Assessment
Time frame: 1 day
Stiffness [Nm/deg] for slow stretch
Measurement of Stiffness \[Nm/deg\] by Instrumented Spasticity Assessment
Time frame: 1 day
Joint angle of catch [deg] from the fast stretch
Measurement of Joint angle of catch \[deg\] from the fast stretch by Instrumented Spasticity Assessment
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Time frame: 1 day
Angle of EMG threshold [deg] from the fast stretch
Measurement of Angle of EMG threshold \[deg\] by Instrumented Spasticity Assessment
Time frame: 1 day
Intensity of catch derived from the fast stretch
Measurement of Intensity of catch by Instrumented Spasticity Assessment
Time frame: 1 day
Clinical assessment of spasticity at fast stretch
Estimation of spasticity by Modified Assessment Scale
Time frame: 1 day
Clinical assessment of spasticity angle at slow and fast stretch
Estimation of spasticity by Tardieu Scale
Time frame: 1 day