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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
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.
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.
- 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.