Design and evaluation of a wearable powered foot orthosis with metatarsophalangeal joint

Yixiang Liu, Xizhe Zang*, Niansong Zhang, Ming Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The metatarsophalangeal (MTP) joints play critical roles in human locomotion. Functional restriction or loss of MTP joints will lead to lower walking speed, poorer walking balance, and more consumed metabolic energy cost compared with normal walking. However, existing foot orthoses are focused on maintaining the movement of the ankle joint, without assisting the MTP joints. In this paper, in order to improve the walking performance of people with lower limb impairments, a wearable powered foot orthosis (WPFO) which has actuated MTP joint is designed and constructed. Preliminary experiments on three nondisabled subjects demonstrated functionality and capabilities of the WPFO to provide correctly timed dorsiflexion and plantar flexion assistance at the MTP joint during walking. These results also suggest that the WPFO could offer promise in certain rehabilitation applications and clinical treatment.

Original languageEnglish (US)
Article number9289505
JournalApplied Bionics and Biomechanics
StatePublished - 2018

ASJC Scopus subject areas

  • Biotechnology
  • Medicine (miscellaneous)
  • Bioengineering
  • Biomedical Engineering

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