Solution of Redundant Muscle Forces in Human Locomotion with Multibody Dynamics and Optimization Tools

摘要

The analysis of human motion using inverse dynamics approaches allows for the evaluation of the muscle forces based on the knowledge of the kinematics of the human subject and the applied external forces. Owing to the redundant nature of the muscle arrangement, the system of equations available for the solution of the inverse dynamics problem has more unknown muscle forces than available equations. Therefore static optimization techniques are required to obtain a solution of the problem. Emphasizing applications to gait analysis and normal sports activities a whole-body, three-dimensional, biomechanical model of the human muscle-skeletal system is purposed to support the inverse dynamic analysis. In its current state of development, the biomechanical model includes a detailed description of the principal muscles of the locomotion apparatus for the lower limbs while net moments-of-force are used to represent the lumped muscle action about each other anatomical joint of the model.