Fig. 3

Typical example of imposed (black line) and actual (grey line) pelvic movements in the transverse plane (X-Y) during gait in LOPES II for the pelvic support (PS) and pelvic constraint (PC) conditions. Pelvic position was determined by the midpoint between the hip joints. The pelvic movements were corrected for the displacement in the line of progression. Arrows indicate the direction of the pelvic displacements. The markers represent the moment of heel contact (HC) and toe off (TO)