Fig. 3From: A novel method of measuring passive quasi-stiffness in the first metatarsophalangeal jointPlot of torque (in Nmm) against first MTPJ angular displacement (in degrees). The slope of the graph (7.30 Nmm/degrees) is the quasi-stiffness of the joint. The R2 indicates that 98 % variability can be explained by this modelBack to article page