Article

The aim of this study was to clarify the method of the Duncan-Ely test and
to estimate its interobserver reliability and validity by comparing it with
three-dimensional gait analysis (3DGA). METHOD:
This study included 36
consecutive ambulatory patients with cerebral palsy (CP) who underwent
preoperative 3DGA. The Duncan-Ely test was performed during three different
velocities (slow, gravity, and fast). The interobserver reliability was assessed
by three examiners. The results of the test were compared with kinematic
variables derived from the gait analysis to assess the sensitivity and
specificity of the test. The cut-off value was determined at the point of
trade-off between the highest sensitivity and specificity. RESULTS: The
intraclass correlation coefficient measuring interobserver reliability of the
Duncan-Ely test was greatest during fast velocity (0.819). The sensitivity and
specificity of the test during gravity velocity for knee range of motion total
were 63.0% and 100% respectively, with a cut-off value of 78.3 degrees . The
sensitivity and specificity of the test during fast velocity for knee range of
motion total were 66.7% and 100% respectively, with a cut-off value of 65 degrees
. INTERPRETATION: The Duncan-Ely test shows excellent reliability in fast
knee-flexion velocity, and good sensitivity and specificity compared with 3DGA
during physical examination as a preoperative assessment of rectus femoris
spasticity in patients with CP.
CI - (c) 2015 Mac Keith Press.

Langue : ANGLAIS