Article

The objective of this study was to determine the within-and between-day
reliability of spatio-temporal, plantar pressure, kinematic and kinetic
measurements based on a novel, seven segment foot model applied in patients with
Psoriatic Arthritis (PsA). Nine PsA patients and matched healthy adult controls
underwent three-dimensional gait analysis on two occasions, one week apart using
a seven segment foot model. A core-set of functional variables including
inter-segment kinematics, kinetics, spatio-temporal and plantar pressure
distribution were analysed using the coefficient of multiple correlation (CMC),
Bland-Altman plots, intraclass correlation coefficients (ICC) and the standard
error of measurement (SEM). Results showed excellent within- and between-day
reliability for intersegment kinematic and kinetic data patterns with CMC values
typically greater than 0.950 in a clinically stable cohort of PsA patients.
Between-day reliability ranged from poor to excellent for absolute CMC values.
Corrected CMC values were consistently higher across all variables ranging from
fair-to-good to excellent. ICC values indicated excellent reliability for
discrete spatio-temporal, plantar pressure, and ankle moment and power variables
for both groups. Reliability for ground reaction forces and kinematic discrete
variables ranged from fair-to-good to excellent. Standard error of measurement
values ranged from 0.7 degrees to 3.0 degrees for discrete kinematic variables
across both groups with greater variability in the PsA patients. In conclusion,
intersegment kinematics and kinetics as well as spatio-temporal and plantar
pressure can be reliably measured in PsA patients using a novel seven segment
foot model. Some discrete kinematic variables have poor reliability and should
not be used in prospective cohort and intervention studies.
CI - Copyright (c) 2010 Elsevier B.V. All rights reserved.

Langue : ANGLAIS