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The Effect of Changes in Foot Cutaneous Sensation on Plantar Pressure Distribution during Gait  

Seong, Dae-Young (Department of Physical Therapy, Graduate School of Health & Medical Science, Catholic University of Daegu)
Kim, Joong-Hwi (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu)
Park, Ji-Won (Department of Physical Therapy, College of Medical Science, Catholic University of Daegu)
Publication Information
The Journal of Korean Physical Therapy / v.24, no.5, 2012 , pp. 306-312 More about this Journal
Abstract
Purpose: The purpose of this study was to examine the effect of changes in foot cutaneous sensation on plantar pressure distribution during gait. Methods: Sixteen healthy young subjects participated in this experiment. All subjects performed two trials of walking under three somatosensory conditions induced by a normal facilitatory insole that provides increased plantar sensory stimulation, and application of lidocaine cream to the plantar surface of the foot to reduce the sensitivity of the soles. Semmes-Weinstein monofilaments were used for evaluation of reduced plantar sensation. The Pedar system was used for measurement of pressure distribution at the plantar surface of the foot. Results: Pressure in the lateral midfoot area showed an increase with increasing and decreasing sensory inputs. When sensory input was increased, plantar pressure showed a decrease in the forefoot area. When sensory input was decreased, plantar pressure showed an increase in the lateral forefoot area and a decrease in the hallux area. Conclusion: By altering sensory feedback, plantar pressure distribution is changed during gait. Plantar cutaneous afferents play an important role in plantar distribution.
Keywords
Sensory feedback; Gait; Foot;
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