Fig. 1From: Clustering trunk movements of children and adolescents with neurological gait disorders undergoing robot-assisted gait therapy: the functional ability determines if actuated pelvis movements are clinically usefulWorking Principle of the FreeD Module: A The images show the FreeD module from the top view in different positions. B The FreeD module moves the pelvis on a combined mediolateral translation (light blue) and axial rotation (dark blue). Maximum values are 4 cm per side and 4 degrees axial rotation. The combined movement path of the pelvis is shown in light greenBack to article page