This resulted in disregarding on average 20 and 22 percent of the data points and reduced the error of the circular fit by 49.1 and 50.1 percent for the ESAR and
SACH foot, respectively.
K1:
SACH foot, identified by name in the Durable Medical Equipment Regional Carrier (DMERC) prosthetic policy definition of foot/ankle assemblies [6].
We selected the test prosthetic feet to represent each of the categories of feet, i.e.,
SACH foot (K1); stationary attachment flexible endoskeleton (SAFE) foot (Campbell-Childs Inc; White City, Oregon) (K2); Talux foot (Ossur; Reykjavik, Iceland) (K3); and Proprio foot (Ossur), which is the first commercially available microprocessor ankle (MPA) (no assigned K-level).
They all reported linear stiffness at the "heel strike" and "toe off" positions of an Otto Bock
SACH foot, derived from the force-displacement plots when loading the foot within a materials testing machine.
reported that the vertical GRF peak during prosthetic-side weight acceptance had a reduced magnitude and occurred sooner after initial contact with an ESAR foot than with the
SACH foot [12], Lehmann et al.