Journal of the Ergonomics Society of Korea (대한인간공학회지)

Ergonomics Society of Korea (대한인간공학회)
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Development of the Active Ankle Foot Orthosis to Induce the Normal Gait for the Paralysis Patients

마비 환자의 정상적 보행을 위한 능동형 단하지 보조기 개발

  • Hwang, Sung-Jae (Department of Biomedical Engineering, Yonsei University) ;
  • Kim, Jung-Yoon (Department of Biomedical Engineering, Yonsei University) ;
  • Hwang, Seon-Hong (Department of Biomedical Engineering, Yonsei University) ;
  • Park, Sun-Woo (Department of Biomedical Engineering, Yonsei University) ;
  • Yi, Jin-Bock (Department of Biomedical Engineering, Yonsei University) ;
  • Kim, Young-Ho (Department of Biomedical Engineering, Yonsei University,Institute of Medical Engineering, Yonsei University)
  • 황성재 (연세대학교 의공학과) ;
  • 김정윤 (연세대학교 의공학과) ;
  • 황선홍 (연세대학교 의공학과) ;
  • 박선우 (연세대학교 의공학과) ;
  • 이진복 (연세대학교 의공학과) ;
  • 김영호 (연세대학교 의공학과,연세의료공학연구원)
  • Published : 2007.05.31
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Abstract

In this study, we developed an active ankle-foot orthosis(AAFO) which can control dorsi/ plantar flexion of the ankle joint to prevent foot drop and toe drag during walking. 3D gait analyses were performed on five healthy subjects under three different gait conditions: the normal gait without AFO, the SAFO gait with the conventional plastic AFO, and the AAFO gait with the developed AFO. As a result, the developed AAFO preeminently induced the normal gait compared to the SAFO. Additionally, AAFO prevented foot drop by proper plantarflexion during loading response and provided enough plantarflexion moment as a driving force to walk forward by sufficient push-off during pre-swing. AAFO also could prevent toe drag by proper dorsiflexion during swing phase. These results indicate that the developed AAFO may have more clinical benefits to treat foot drop and toe drag, compared to conventional AFOs, and also may be useful in patients with other orthotic devices.

Keywords

References

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