Modeling of skeletal musculature based on MRI - Calculation of the moment arm about the pronation-of-forearm and the forearm supinate -

To evaluate in vivo power of such as thews and the joints load during exercise from the result of the physical exercise measurement, three-dimensional of analytic-model of human body was studied. One of the important parameters of the musculo-skeletal model is a moment arm. This is the coefficient when computing a muscle-tonus from the joint moment. The moment arm is a parameter which is indispensable to make a three-dimensional musculo-skeletal model. But, few study has been reported about the pronation-of-forearm and the forearm supinate of moment arm. In the present research, we analyzed the MRI image of the living body upper limb and calculated a moment arm about the pronation-of-forearm and the forearm supinate.