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題名 | 全觸式鞋內墊與足部之生物力學評估=Biomechanical Study of the Total Contact Insole and the Foot |
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作者 | 吳淑霞; 陳文斌; 鄧復旦; 楊世偉; | 書刊名 | 中華醫學工程學刊 |
卷期 | 19:1 1999.03[民88.03] |
頁次 | 頁39-45 |
分類號 | 475.3 |
關鍵詞 | 全觸式鞋內墊; 足部潰瘍; 足底壓力; 有限元素法; Total contact insole; Ulceration; Plantar pressure; Finite element analysis; |
語文 | 中文(Chinese) |
中文摘要 | 過高的足底壓力,是造成糖尿病患者發生足底潰瘍的主要原因。利用全觸式鞋內墊 (total contact insole) 來減少足部所承受的壓力,在臨床上具有很好的效果。 本研究以 量化的方式來評估足部與足部輔具介面問的力學狀況,以有限元素法來建立完整足部的三維 模型,模擬步態的力學情形,來預測全觸式鞋內墊使用不同材料時,足部與全觸式鞋內墊之 間接觸應力分佈的情形,並以足底壓力量測系統得到足底壓力重新分佈的證明,相互驗證。 由分析結果顯示不論是珊助實驗值或有限元素模型預測值,穿著全觸式鞋內墊之足底所受應 力不僅較穿著一般性鞋墊平均而且皆有大幅下降的趨勢,而且足弓區域的接觸面積增加,將 局部區域的高壓力轉移至此區域,符合了最初設計全觸式鞋內墊能夠降低並重新分配足底壓 力的功能。除此,本研究也依不同材料的特性,再分別針對四組不同材料組合之全觸式鞋內 墊建立有限元素模型並進行接觸應力分析, 分析結果以材料組合為 medium P1astazote、 Micr0ce1puff、Neoprene crepe soling 對於降低足底壓力的效果最佳。 |
英文摘要 | High plantar pressures is one of the major causes for the plantar ulceration of diabetic patients. In clinical practice, total contact insoles are routinely used to reduce the risk of ulcerations and the efficacy is quite satisfactory. However there is little scientific evidence to support the efficacy of such orthosis. The purpose of this study was to examine the plantar pressure in the interface between foot plantar and different total contact insoles by using a quasi-static three dimensional finite element model. Also the EMED-Pedar system was used to measure the plantar pressure distribution and the results were compared with finite element results for the verification of the analysis model. In addition, based on different material characteristic, finite element models of three different material combinations of total contact insoles were created and the contact stress analyses were performed. Result showed that with material combination of medium Plastazote, Microcelpuff and Neoprene crepe soling performed best in reducing plantar pressures. |
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