Article

Subjects with knee osteoarthritis walk differently compared to
healthy subjects. Managing these gait alterations has been proven effective for
reducing pain and increasing function. The Stride Analyzer is a low cost gait
analysis tool but its clinimetric properties have not been investigated yet in
subjects with symptomatic knee osteoarthritis.
The aim of this study was to
investigate the reliability and validity of the SA compared with the Gold
standard (Vicon) in persons with knee OA. METHODS:
Fifteen subjects with
symptomatic knee osteoarthritis were instructed to walk at a self-selected speed
in a gait laboratory. Temporospatial (TS) gait parameters were recorded
simultaneously by the Stride Analyzer and by a 16-camera-infrared optoelectronic
motion capturing system (Vicon). Validity and test-retest reliability of the
Stride Analyzer were examined by Bland-Altman plots, intra-class correlation
coefficients (ICC) and the standard error of measurement (SEM). RESULTS:
Test-retest analyses showed good agreement for all TS parameters with ICC values
ranging from 0.805 (single limb support right) to 0.949 (velocity) and SEM%
values ranging from 0.78% (stance phase right (% of gait cycle)) to 4.52% (double
limb support right (% of gait cycle)). Good agreement between Stride Analyzer and
Vicon was found for the following TS parameters: velocity (z=1.01), cadence
(z=-0.85), stride length (z=1.63) and gait cycle (z=0.86). All other gait
parameters showed lower ICC values (<0.689). INTERPRETATION: Our results suggest
that the Stride Analyzer can be used in the clinical field to perform gait
analysis in subjects with symptomatic knee osteoarthritis.
CI - Copyright (c) 2016 Elsevier B.V. All rights reserved.

Langue : ANGLAIS