Patent ID: 7833285

Claim:
Prosthetic knee joint comprising: four joint members; and four pivot pins for connecting the four joint members, wherein two of the joint members are transversely extending joint members, one of which is connected at one end of the knee joint to a prosthetic stem, and the other of which is connected at an opposite end of the knee joint to a prosthetic foot, wherein the other two joint members are longitudinal joint members during movement of the knee joint, wherein the two longitudinal joint members are supported, respectively, at upper ends thereof by a pair of the pivot pins mounted to an upper one of the transversely extending joint members, and the two longitudinal joint members are supported, respectively, at lower ends thereof by another pair of the pivot pins mounted to a lower one of the transversely extending joint members, wherein the two longitudinal joint members being are adapted to pivot from a position substantially parallel to each other, into an inclined position with respect to each other, wherein at least a first one of the two pivot pins of the joint member which is connected to a prosthetic foot is formed as an eccentric, wherein the eccentric has an axial centerline C that is offset by a predetermined distance from a longitudinal axis A 1 of an enlarged circular aperture, and is parallel to the longitudinal axis A 1 of the enlarged circular aperture, and wherein, upon a first positioning of said eccentric relative to the enlarged aperture, a first predetermined distance between the first one and a second one of the two pivot pins on said joint member connected to the prosthetic foot is established, and wherein, upon a second positioning of said eccentric relative to the enlarged aperture, a second predetermined distance between the first one and a second one of the two pivot pins on said joint member connected to the prosthetic foot is established, the second predetermined distance being different from the first predetermined distance.