Fig. 4
From: Restoring natural upper limb movement through a wrist prosthetic module for partial hand amputees
Description of the reach-to-grasp task. a All phases of the motions the reach-to-grasp task in the control group. b In phase 2, the partial hand amputee used only the Re-fill without P/S (left side), and a partial hand amputee used the Re-fill with P/S (right side). c Anatomical plane and defined joint motions