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KMID : 0357220120240050306
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Journal of Korean Society Physical Therapy
2012 Volume.24 No. 5 p.306 ~ p.312
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The Effect of Changes in Foot Cutaneous Sensation on Plantar Pressure Distribution during Gait
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Seong Dae-Young
Kim Joong-Hwi
Park Ji-Won
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Abstract
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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.
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KEYWORD
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Sensory feedback, Gait, Foot
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