2A2-D05 Role of the Lumbrical Muscle in Articulated Motion of Index Fingers(Musculoskeletal Modeling)

Abstract

The contribution of lumbrical muscles for the articulated finger motion is yet to be clarified. In this paper we analyze the role of the lumbrical muscle by using excursion controller and cadaver specimens. The result of the experiment clearly shows that the activation of the lumbrical muscle enlarges the arc of the fingertip trajectory except in the hyper extended and fully flexed postures in which taut collateral ligaments constrain the free articulated motion.