抄録
The purpose of this study was to clarify differences in postural sway and plantar pressure distribution during quiet standing between healthy older adults and older adults with hallux valgus. Twenty-nine healthy older adults and 15 older adults with hallux valgus participated in this study. Postural sway was assessed using a force platform by measuring the ellipse area, medial–lateral maximum range, and anterior–posterior maximum range derived from the trajectory of the center of pressure during quiet standing. Plantar pressure was measured using a pressure measurement system. The sole was divided into seven regions, and the plantar pressure in each region was calculated as a percentage of the total plantar pressure. Compared with healthy older adults, older adults with hallux valgus exhibited significantly greater ellipse area and medial–lateral maximum range during quiet standing, as well as significantly higher plantar pressure in the medial forefoot region. This study demonstrated that older adults with hallux valgus exhibit greater postural instability during quiet standing and have plantar pressure distributions that differ from those of healthy older adults. These findings highlight the importance of interventions targeting standing balance in older adults with hallux valgus.