Going barefoot eases burden on arthritic knees
(Reuters)
Updated: 2006-10-20 10:50 NEW YORK - Adults who suffer
from knee osteoarthritis - the wear-and-tear form of arthritis - may want to go
without shoes when they can, based on new research that suggests that walking in
shoes increases loads on knee and hip joints in patients with osteoarthritis of
the knee.
Osteoarthritis (OA) of the lower extremity is largely mediated by "aberrant
biomechanical forces," note Dr. Najia Shakoor and Dr. Joel A. Block, from Rush
Medical College, Chicago, in the journal Arthritis and Rheumatism.
"In knee OA, the most well-studied form, there is evidence that patients with
abnormally high dynamic loading of the knees are at greater risk of incident and
progressive diseases," they note. "Consequently, strategies that effectively
reduce loads on the knee during gait would be of great interest."
The researchers assessed the effects of modern shoes on gait and lower
extremity joint loads in 75 patients with knee OA. Their mean age was 59, their
mean BMI (body mass index) was 28.4, and 59 of the 75 were women.
Gait analysis was performed while the subjects were wearing their everyday
walking shoes and while they were walking barefoot.
Walking barefoot resulted in significant decreases in dynamic loads at the
knees and hips, the team reports.
The findings "suggest that modern shoes may exacerbate the abnormal
biomechanics of lower extremity OA," the team concludes.
Although the effect of wearing shoes on onset of OA hasn't been studied, they
add, "modern shoes, and perhaps our daily walking practices, may need to be
reevaluated with regard to their effects on the prevalence and progression of
OA."
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