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

doi:10.1016/S0966-6362(02)00063-2

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

Orthopedic Surgery

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	125-131
Number of pages	7
Journal	Gait and Posture
Volume	17
Issue number	2
DOIs	https://doi.org/10.1016/S0966-6362(02)00063-2
State	Published - Apr 2003

Keywords

Ankle biomechanics
Gait
In vitro
Neuromuscular control

ASJC Scopus subject areas

Biophysics
Orthopedics and Sports Medicine
Rehabilitation

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10.1016/S0966-6362(02)00063-2

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title = "An in vitro study of individual ankle muscle actions on the center of pressure",

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.",

keywords = "Ankle biomechanics, Gait, In vitro, Neuromuscular control",

author = "Kim, {Kyu Jung} and Eiichi Uchiyama and Kitaoka, {Harold B.} and An, {Kai Nan}",

note = "Funding Information: We gratefully acknowledge the support of National Institutes of Health Grants R01 AR 42315 and TG HD 07447 in this research.",

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AU - Kim, Kyu Jung

AU - Uchiyama, Eiichi

AU - Kitaoka, Harold B.

AU - An, Kai Nan

N1 - Funding Information: We gratefully acknowledge the support of National Institutes of Health Grants R01 AR 42315 and TG HD 07447 in this research.

PY - 2003/4

Y1 - 2003/4

N2 - 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.

AB - 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.

KW - Ankle biomechanics

KW - Gait

KW - In vitro

KW - Neuromuscular control

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

Abstract

Keywords

ASJC Scopus subject areas

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