An in vitro study of individual ankle muscle actions on the center of pressure

Kyu Jung Kim, Eiichi Uchiyama, Harold B. Kitaoka, Kai Nan An

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

The objective of this study was to correlate the effects of muscle force on the movement of the center of pressure (COP) for increased clinical utility of the COP measurement. Five fresh frozen cadaveric specimens were used to apply a 49 N sinusoidal muscle force to isolated or grouped extrinsic ankle muscles, and a constant ankle joint reaction force at different tibial positions. The muscle force and the vertical ground reaction force (GRF) play the role of a mechanical lever system so that the differential COP movement can be interpreted as a moment arm for the vertical GRF.

Original languageEnglish (US)
Pages (from-to)125-131
Number of pages7
JournalGait and Posture
Volume17
Issue number2
DOIs
StatePublished - Apr 1 2003

Keywords

  • Ankle biomechanics
  • Gait
  • In vitro
  • Neuromuscular control

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Rehabilitation

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