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Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
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Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder

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Abnormal joint torque patterns exhibited by chronic stroke subjects while walking with a prescribed physiological

Nathan D Neckel1, Natalie Blonien, Diane Nichols

  • 1Center for Applied Biomechanics and Rehabilitation Research, National Rehabilitation Hospital, Washington, DC 20010, USA. ndn3@georgetown.edu

Journal of Neuroengineering and Rehabilitation
|September 3, 2008
PubMed
Summary

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Robotic gait training in stroke survivors did not normalize joint torques, despite achieving symmetric movement patterns. Abnormal torque patterns persisted, indicating underlying gait deficits remain.

Area of Science:

  • Neuroscience
  • Biomechanics
  • Rehabilitation Engineering

Background:

  • Chronic stroke survivors often experience significant gait impairments affecting quality of life.
  • Asymmetrical gait is common in stroke, impacting lower extremity function.

Purpose of the Study:

  • To investigate if robotic gait-orthosis (Lokomat) can normalize ankle, knee, and hip joint torques in stroke survivors.
  • To compare joint torques between hemiparetic stroke subjects and non-disabled controls during robotic-assisted walking.

Main Methods:

  • 10 chronic hemiparetic stroke subjects and 5 controls walked in a Lokomat with motion analysis.
  • Ankle, knee, and hip joint torques were calculated using inverse dynamics.
  • Statistical analysis (ANOVA) compared joint torques between control, unimpaired, and impaired legs.

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Last Updated: Jul 2, 2026

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Main Results:

  • Kinematic patterns were similar between stroke and control groups.
  • Kinetic patterns differed significantly; unimpaired limbs showed greater hip/knee torques during stance.
  • Impaired limbs exhibited abnormal knee extension and hip abduction during specific gait phases.

Conclusions:

  • The Lokomat facilitated symmetric kinematic gait patterns but did not normalize asymmetric joint torques in stroke survivors.
  • Abnormal joint torques reflect characteristic stroke gait strategies like hip hiking and circumduction.