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Lower limb spasticity assessment using an inertial sensor: a reliability study.

I Sterpi1, A Caroli, E Meazza

  • 1Bioengineering Service, 'Salvatore Maugeri' Foundation, IRCCS, Rehabilitation Institute of Pavia, Via Salvatore Maugeri 10, 27100 Pavia, Italy.

Physiological Measurement
|October 10, 2013
PubMed
Summary
This summary is machine-generated.

Objective measurement of quadriceps spasticity using inertial sensors during the Wartenberg pendulum test showed good reliability. This technology can objectively assess spasticity in neurological patients, aiding rehabilitation.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Rehabilitation Medicine

Background:

  • Spasticity is a common motor impairment following neurological disorders, hindering functional recovery.
  • Clinical assessment relies on subjective standardized scales, lacking objective quantification.
  • The Wartenberg pendulum test is a clinical method to assess spasticity.

Purpose of the Study:

  • To evaluate the use of inertial sensors for objective quadriceps spasticity measurement.
  • To assess the test-retest and inter-rater reliability of inertial sensor measurements during the Wartenberg pendulum test.

Main Methods:

  • Inertial sensors were used to measure leg kinematics during the Wartenberg pendulum test.
  • Ten healthy subjects and 11 patients with severe brain damage were enrolled.
  • Measurements were taken over three consecutive days to assess test-retest and inter-rater reliability.
  • The Modified Ashworth Scale was used for concurrent clinical assessment.

Main Results:

  • Factorial ANOVA demonstrated the method's ability to differentiate between healthy and pathological conditions.
  • Low Standard Error of Measurement (SEM) and high Intraclass Correlation Coefficient (ICC) values indicated good reliability.
  • Inertial sensor measurements showed good test-retest and inter-rater reliability.

Conclusions:

  • Inertial sensors provide a reliable and objective method for quantifying quadriceps spasticity.
  • This technology can characterize leg kinematics during the Wartenberg pendulum test.
  • Objective spasticity assessment using inertial sensors can support rehabilitation strategies for neurological patients.