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Musculoskeletal model of the lower extremity of trans-tibial amputee

Published: 23 April 2007 Publication History

Abstract

To predict and explain the patterns of muscle forces in the stump of a left trans-tibial amputee during walking, and to study the effects of walking speed, Musculoskeletal model is built with the combination of the computer simulation to calculate muscle forces in the trans-tibial stump during walking. Kinematic data and ground-reaction forces are simultaneously recorded by a gait analysis system and a force platform, respectively. The data are input into a three-dimensional model of the lower trans-tibial extremity and the corresponding muscle forces are predicted by a static optimization process. Muscles perform much more actively in stance than in swing phase. Most muscles appear very active around both heel-strike and toe-off. The bigger joint moments increased muscle forces. Muscle forces get weak because the joint moments reduced rapidly and look almost the same in later stance and swing phase. In addition, most flexors keep a little acting according to little joint moments exerted to prevent hyperextension.

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cover image ACM Conferences
i-CREATe '07: Proceedings of the 1st international convention on Rehabilitation engineering & assistive technology: in conjunction with 1st Tan Tock Seng Hospital Neurorehabilitation Meeting
April 2007
272 pages
ISBN:9781595938527
DOI:10.1145/1328491
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

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Publication History

Published: 23 April 2007

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  1. muscle forces
  2. musculoskeletal model
  3. walking speed

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