Abstract: In Paxt I of this paper, a two-dimensionalanatomical1y-based biodynamic model of the humanlower extremity, which does not includ the effects ofmuscle, was established. In Part II of the paper)the biodynamic responses of that model is investi-gated in detail. In this Part of the paper, the mus-cle effects on the motion of tl1e lower extremity areinvestigated, When compaxed with the results ofa compatible phenomenological model for the samemuscle activation program, the present anatomicalmodel yields similar ...