Fig. 4From: Energy storing and return prosthetic feet improve step length symmetry while preserving margins of stability in persons with transtibial amputationChange in center of mass velocity (vcom) and backward margin of stability (MoSBW) during the double support phase, from heel strike (HS) of the intact leg until toe-off (TO) of the prosthetic leg during walking with the SACH (green) and ESAR (red) footBack to article page