Improvement and Assessment of Dorsiflexion Support Unit for Frailty

Abstract

We have developed the dorsiflexion support unit (DSU) to improve flail walking. The DSU utilizes flexibility and non-linearity of the elastomer-embedded flexible joints (EEFJ) to eliminate complex adjustment. In this study, we improved the shape and structure of the EEFJ to enhance the supporting force and usability of the DSU. Usability tests were conducted for four healthy female and males. The results show the improved structure successfully reduce the burden to exchange the elastomer cap. In addition, the assessments for the supporting effect were conducted for ten healthy male subjects. According to the results, the DSU successfully reduce the plantar flexion in swing phases and initial stances without additional burden.