抄録
Back ground: As patients with RA and metatarsalgia often have complications such as ankle joint instability, some patients complain of ankle joint pain when wearing a shoe inserted arch pad (the inserted arch pad). We developed a novel arch pad with an ankle sprain supporter regulated ankle joint instability (the strapped arch pad). In our previous study, the remission score of the severity index significantly improved in the participants wearing the strapped arch pad compared with that found in the group wearing the inserted arch pad. In follow-up, we assessed for the biomechanical effect of strapped arch pad on postural sway in this study.
Methods: The twenty-nine outpatients with metatarsalgia of RA were enrolled. The posturographic variables including the envelopment area tracing by the movement of the center of pressure (E AREA) and distance of the movement of the center of pressure per second (LNG/TIME) was assessed for each subject while barefoot, when wearing a strapped arch pad, with an inserted arch pad and when wearing a medial wedged insert with ankle strapping (the strapped medial wedge).
Results: The average E AREA with use of the strapped arch pad was significantly lower than those with use of the inserted arch pad or strapped medial wedge. The LNG/TIME when wearing a strapped arch pad was significantly reduced compared that with an inserted arch pad.
Conclusion: The biomechnical balance improvement by strapped arch pad was agreeable to the clinical effect of the arch pad.
