Development of a prosthetic forearm aiming at humanlike motion for trans-radial amputation

The paper presents a design idea of prosthetic forearm for trans-radial amputees based on body power itself not on an external motorized power. This study aims at realizing humanlike pronation and supination for prosthetic forearms. The proposed has passive joints driven by residual motion of the amputated limb. For an experimental verification, we show that the trans-radial amputee with long remaining length is able to rotate his/her forearm as if he she rotated it before amputation.