Fig. 2

The bimanual task required the participant to grasp and transport a tray to assess synchrony of the upper limbs during a functional reach-to-grasp bimanual task. Use of the standard prosthesis during the task (A), the participant displayed an observable but statistically insignificant (Student’s t-test, p = 0.29) asynchrony while returning his hands to the starting position using the standard prosthesis. This trend of asynchrony was not observed during the use of the 3D printed arm (B)