5.1.5 The hand segment

In the biomechanical model, the hand segment extends from the wrist to the distal end of the hand and has three degrees of freedom: flexion/extension, radial/ulnar deviation, and pronation/supination. Although pronation/supination occurs anatomically in the forearm, Ergoniza Intelligent represents this rotation by rotating the hand segment at the wrist joint.

As shown in Figure 8, the Ergoniza Intelligent graphical model incorporates articulated segments representing the distal, middle, and proximal phalanges of each finger. These elements serve a graphical function only: they are not considered in the biomechanical model or included in the analyses.