Contributions of the lower extremity joint on the support moment in normal walking and, in unexpected step-down walking

Young Ho Kim, Han Sung Kim, Sung Jae Hwang, Seong Sik Myeong, Young Kwang Keum

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Relative contributions of lower extremity joints on the support moment were investigated in this study. Three-dimensional gait analyses were performed in normal walking and in unexpected step-down walking. For both gait studies, inverse dynamics were performed to obtain each joint moment of the lower extremity, which was applied to the forward dynamics simulation to determine the contributions on the support moment at different phases of walking. The forward dynamic simulation results showed that, in normal walking, the ankle plantar flexors contributed significantly during single-limb-support. However, the ankle plantar flexors, knee extensors and hip extensors worked together during double-limb-support. In unexpected step-down walking, the important contributors on the support of the body during single-limb-support were not only ankle plantar flexors but also knee extensors. This study, analyzing the relative contributions of the lower limb joint moments for the body support, would be helpful to understand different unexpected walking conditions and compensatory mechanisms for various pathological gaits.

Original languageEnglish
Pages (from-to)371-376
Number of pages6
JournalJournal of Mechanical Science and Technology
Volume19
Issue number1 SPEC. ISS.
Publication statusPublished - 2005 Jan 1

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Computer simulation

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kim, Young Ho ; Kim, Han Sung ; Hwang, Sung Jae ; Myeong, Seong Sik ; Keum, Young Kwang. / Contributions of the lower extremity joint on the support moment in normal walking and, in unexpected step-down walking. In: Journal of Mechanical Science and Technology. 2005 ; Vol. 19, No. 1 SPEC. ISS. pp. 371-376.
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Contributions of the lower extremity joint on the support moment in normal walking and, in unexpected step-down walking. / Kim, Young Ho; Kim, Han Sung; Hwang, Sung Jae; Myeong, Seong Sik; Keum, Young Kwang.

In: Journal of Mechanical Science and Technology, Vol. 19, No. 1 SPEC. ISS., 01.01.2005, p. 371-376.

Research output: Contribution to journalArticle

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