Knee and ankle biomechanics with lateral wedges with and without a custom arch support in those with medial knee osteoarthritis and flat feet

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
Gillian L HatfieldMichael A Hunt

Abstract

This study compared immediate changes in knee and ankle/subtalar biomechanics with lateral wedge orthotics with and without custom arch support in people with knee osteoarthritis and flat feet. Twenty-six participants with radiographic evidence of medial knee osteoarthritis (22 females; age 64.0 years [SD 8.0 years], BMI 27.2 kg/m(2) [4.2]) and flat feet (median foot posture index = + 5) underwent three-dimensional gait analysis for three conditions: Control (no orthotic), lateral wedge, and lateral wedge plus arch support. Condition order was randomized. Outcomes included frontal plane knee and ankle/subtalar biomechanics, and comfort. Compared to the control, lateral wedge and lateral wedge with arch support reduced the knee adduction moment impulse by 8% and 6%, respectively (p < 0.05). However, the lateral wedge resulted in a more everted foot position (4.3 degrees) than lateral wedge plus arch support (3.2 degrees) (p < 0.05). In contrast, lateral wedge plus arch support reduced foot frontal plane excursion compared to other conditions (p < 0.05). Participants self-reported significantly more immediate comfort with lateral wedge plus arch support compared to the control, whereas there was no difference in self-reported com...Continue Reading

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Citations

Apr 4, 2017·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Hirotaka IijimaShuichi Matsuda
Sep 25, 2018·Hospital Practice·E Carlos Rodriguez-Merchan, Hortensia De La Corte-Rodriguez
Sep 10, 2018·PM & R : the Journal of Injury, Function, and Rehabilitation·Jesse M CharltonMichael A Hunt
Sep 15, 2018·Journal of Foot and Ankle Research·Timothy A SayerAdam L Bryant

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