Abstract
In this paper, we developed a subject-specific musculoskeletal hand model considering the differences in the inertia properties and muscle force parameters. We measured motion and force data from one subject; the reference hand posture, three postures while the subject was pinching objects with 28, 42 and 56 mm width, and the maximum pinching force for each posture. By using a digital hand model made from motion data and force data for 42 and 56 mm objects, we assigned several properties and parameters in order to make this model subject-specific. We estimated the maximum force while the subject was pinching objects with 28 mm. As a result of the simulation, the maximum force was estimated to be 29.5 N that was almost agreed with the measured maximum force (26.5 N). These results suggest that it is possible to perform musculoskeletal simulation considering individual differences.
