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Related Experiment Video

Updated: Aug 18, 2025

Clinical-oriented Three-dimensional Gait Analysis Method for Evaluating Gait Disorder
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Pathological gait in Rett syndrome: Quantitative evaluation using three-dimensional gait analysis.

Takeshi Suzuki1, Yuji Ito2, Tadashi Ito3

  • 1Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.

European Journal of Paediatric Neurology : EJPN : Official Journal of the European Paediatric Neurology Society
|December 9, 2022
PubMed
Summary

Three-dimensional gait analysis (3DGA) quantitatively assessed Rett syndrome (RTT) gait pathology. Patients showed significant differences in speed, step length, cadence, and joint kinematics, particularly in the pelvis and hip.

Keywords:
Ataxic-rigid gaitDystoniaRett syndromeThree-dimensional gait analysis

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Last Updated: Aug 18, 2025

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Area of Science:

  • Neurology
  • Biomechanics
  • Movement Science

Background:

  • Rett syndrome (RTT) is characterized by ataxic-rigid gait.
  • Quantitative gait analysis is crucial for understanding RTT-related motor impairments.

Purpose of the Study:

  • To quantitatively evaluate gait pathology in RTT patients using three-dimensional gait analysis (3DGA).
  • To identify specific kinematic abnormalities contributing to gait dysfunction in RTT.

Main Methods:

  • 3DGA was performed on 11 RTT patients (ages 5-18) and 33 healthy controls.
  • Spatiotemporal parameters, Gait Deviation Index (GDI), and Gait Profile Score (GPS) were compared.
  • Gait kinematics across multiple body segments and planes were analyzed.

Main Results:

  • RTT patients exhibited significantly slower walking speed, reduced step length, lower cadence, and wider step width.
  • Patients had lower GDI and higher GPS, indicating significant gait pathology.
  • Abnormalities were prominent in sagittal (pelvis, hip, knee, ankle) and coronal (pelvis, hip) planes, and horizontal plane of the pelvis.

Conclusions:

  • 3DGA provides a robust method for quantifying gait pathology in RTT.
  • Beyond ataxic-rigid gait, coronal and horizontal plane pelvic/hip abnormalities are key features of RTT gait.
  • These findings can inform targeted therapeutic interventions for RTT gait dysfunction.