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Gait analysis in ankylosing spondylitis.

L Zebouni1, P S Helliwell, A Howe

  • 1Rheumatology and Rehabilitation Research Unit, University of Leeds, United Kingdom.

Annals of the Rheumatic Diseases
|July 1, 1992
PubMed
Summary

Patients with ankylosing spondylitis exhibit altered gait patterns, including shorter stride length and reduced hip/knee movement. This cautious gait results from spinal rigidity and decreased shock absorption.

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Area of Science:

  • Biomechanical analysis
  • Rheumatology
  • Gait analysis

Background:

  • Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the axial skeleton.
  • Understanding gait alterations in AS is crucial for managing disease impact and patient mobility.
  • Previous studies have explored gait in AS, but specific analysis of axial disease only is needed.

Purpose of the Study:

  • To compare the gait patterns of patients with ankylosing spondylitis (AS) and axial disease only to healthy controls.
  • To identify specific kinematic differences in hip and knee movement and stride characteristics.

Main Methods:

  • Utilized a telemeterised electrogoniometer gait analysis system for objective measurement.
  • Analyzed gait variables in 12 patients with AS (axial disease only) and 11 healthy controls.

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  • Assessed the reproducibility of gait variables to ensure reliability.

    • Main Results:

    • Patients with AS demonstrated significantly reduced hip and knee range of motion.
    • Stride length was found to be shorter in the AS group compared to controls.
    • Hip/knee angle ratios did not differ significantly, suggesting compensatory mechanisms.

    Conclusions:

    • Increased spinal rigidity in AS leads to decreased shock absorption.
    • This results in a more cautious gait pattern, characterized by shorter strides and restricted joint movement.
    • The findings highlight the biomechanical consequences of axial AS on locomotion, even without peripheral joint involvement.