Comparison of Ankle Angle Adaptations of Prosthetic Feet with and without Adaptive Ankle Angle during Level Ground, Ramp, and Stair Ambulations of a Transtibial Amputee: A Pilot Study

다국어 초록 (Multilingual Abstract)

This study aimed to investigate kinetics and kinematics of the ankle joint during level ground, ramp, and stair ambulations usingdifferent types of adaptive ankle feet (AAFs), Proprio-FootTM (Össur, IcEland), élan foot (Endolite, USA), and Echelon foot (Endolite,USA). A transtibial amputee was asked to walk on a level ground, a ramp with a 7o slope, and a stair of height 15 cm. The ankleangle and symmetry index (SI) based on the symmetry of the external work performed were measured for AAFs and ambulation. Thesingle support time and stance phase during ambulation were higher for AAFs than the fixed ankle foot. During level ambulation,dorsiflexion increased for all AAFs. During slope ascent ambulation, dorsiflexion increased for the élan foot and Proprio-FootTM, aswell as during the swing phase of the Echelon foot. During slope descent ambulation, the maximum dorsiflexion decreased for theProprio-FootTM. During stair ascent, the élanElan foot and Proprio-FootTM feet improved the dorsiflexion. During stair descent, allAAFs improved the dorsiflextion. Furthermore, SI increased for most of the adaptive ankle feet for all terrain conditions. These resultsindicate that AAFs can be used to improve the kinetics and kinematics of the ankle on the involved side.

참고문헌 (Reference)

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