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KMID : 1137820080290030222
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의공학회지
2008 Volume.29 No. 3 p.222 ~ p.230
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Development of a Model for the Estimation of Knee Joint Moment at MVC
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Nam Yoon-Su
Lee Woo-Eun
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Abstract
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This paper introduces a method of estimating the knee joint moment developed during MVC. By combining the Hill-type muscle model and analytic results on moment arm and musculotendon length change as a function of hip and knee joint angle, the knee joint moment at a specific knee joint angle during MVC is determined. Many differences between the estimated results and the experimental data are noted. It is believed that these differences originate from inaccurate information on the muscle-tendon parameters. The establishment of exact values for the subject’s muscle parameters is almost impossible task. However, sensitivity analysis shows that the tendon slack length is the most critical parameter when applying the Hill-type muscle model. The effect of a change of this parameter on the muscle length force relationship is analyzed in detail.
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KEYWORD
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Hill muscle model, tendon slack length, knee joint moment, sensitivity analysis
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