Article

Increased unilateral foot pronation may cause biomechanical changes
on the lower limbs during gait. We investigated the effects of increased
unilateral foot pronation on the biomechanics of lower limbs and pelvis during
gait. METHODS: Kinematic and kinetic data of 22 participants were collected while
they walked wearing flat and laterally wedged sandals. Principal omponent
analysis was used to compare differences between conditions. FINDINGS: Wearing
the wedged sandal on the ipsilateral side increased ankle eversion moment
(p<0.001; effect size=0.97); rearfoot eversion angle (p<0.001; effect size=0.76);
shank internal rotation (p=0.009; effect size=0.53); increased and reduced knee
internal rotation angle during early and late stance, respectively (p<0.001;
effect size=0.89); increased femur internal rotation (p=0.005; effect size=0.90);
reduced hip internal rotation moment during late stance (p=0.001; effect
size=0.68); and increased pelvic ipsilateral drop (p=0.02; effect size=0.48) of
the ipsilateral side. Wearing the wedged sandal on the contralateral side
increased pelvic contralateral drop (p=0.001; effect size=0.63); hip adduction
moment throughout stance (p=0.027; effect size=0.46); and increased and reduced
the knee adduction moment in early and late stance, respectively (p<0.001; effect
size=0.79). INTERPRETATION: The increased lower limb internal rotation caused by
the wedged sandal reinforces the assumption that rearfoot eversion is coupled
with shank internal rotation. The increased pelvic contralateral drop caused by
the wedged sandal on the contralateral side may explain the increased hip and
knee adduction moments on the ipsilateral side. Increased unilateral foot
pronation causes biomechanical changes on both lower limbs that are associated
with the occurrence of injuries.
CI - Copyright (c) 2014 Elsevier B.V. All rights reserved.

Langue : ANGLAIS