Abstract
Abstract The performance of conventional prosthetic feet depends on material and construction principles. Certain powered feet can even generate net positive mechanical work in order to provide an active push-off. The aim of this study was to evaluate the influence of ankle power on the gait of transfemoral amputees. For this purpose level walking of six transfemoral amputees was analysed with a basic and an active foot and three different power settings of the latter. The results show clear advantages of the active foot in comparison with a basic foot. However, a strong relation of the sound side knee loading parameters with the varied ankle power outputs of the active foot couldn’t be shown.
Highlights
The performance of conventional prosthetic feet depends on material and construction principles
It is supposed that this parameter affects the load on the sound side of amputees [2,3,4]
The first peak of the external knee adduction moment during stance [5, 6], the peak external knee flexion moment [6] and the first peak of the vertical ground reaction force [5] are considered as predictors of knee loading and the development of knee joint degeneration
Summary
The performance of conventional prosthetic feet depends on material and construction principles. The aim of this study was to evaluate the influence of ankle power on the gait of transfemoral amputees. For this purpose level walking of six transfemoral amputees was analysed with a basic and an active foot and three different power settings of the latter. Mechanical work in order to provide such an active pushoff in contrast to the conventional passive feet. Caused by this development, the clinical importance of the ankle power is discussed frequently. The aim of this study was the biomechanical evaluation of the question whether the generated ankle power influences the gait of transfemoral amputees, the knee load on the sound side. The correlation between the ankle power and the sound side knee loading parameters will be analysed
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