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Rehabilitation Practice and Science

Translated Title

單側膝下截肢患者之步態和步行能量消耗分析

Abstract

Amputations not only cause the loss of limb but also accompany with inconvenience of physical mobility for the patients. The newly developed prosthetic designs make possible to the replacement of amputated parts, thus greatly improve the body mobility and life independence of the patients. However, the real manifestation of the prosthetic gait and the discrepancy between the prosthetic and normal gaits is still lacking, especially there are significant difference in kinematics and kinetics between the sound side and prosthetic side with different type of prosthetic feet.There are two steps in these studies: The first step is analyzing the gait of ten unilateral transtibial amputees, walking normal speed and wearing three different prosthesis : SACH foot, single axis foot, multiple axis foot. Motion data was collected by 3D motion analyzing system. The second step is researching the energy expenditure of the same ten patients in the first step. These patients walk at speed of 1 mile per hour, 1.5 miles per hour and 2 miles per hour on slope of 0 grade, 4 grade and 8 grade respectively. Energy expenditure is detected while amputees walking on metabolic measurement cart and heavy-duty treadmill. Subjective results are additionally determined via questionnaire after testing. A survey is conducted to determine the comfort level of prosthesis foot with patients after the experiment. The results showed that the SACH foot provides good late-stance stability through limited dorsiflexion, which is suitable for lower activity level amputees. The single axis foot allow small range of dorsiflexion and plantarflexion which is suitable for the amputees walking on slopes or rough road surface. The multiple axis foot, provides less late-stance stability and more late-stance dorsiflexion ankle motion, which is desirable for higher activity levels or for activities requiring more ankle dorsiflexion. This study finds that the energy expenditure of amputee is from 52% to 58% and the oxygen uptake is from 51% to 53% of the normal subjects. According to the result of questionnaire, multiple axis feet is the most comfortable type and single axis feet is the next. SACH type is the worst one in comparison with the two types mentioned above. Research results will provide quantitative and qualitative insight to facilitate proper prosthetic foot selection.

Language

Traditional Chinese

First Page

123

Last Page

132

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