Knee joint structure of artificial limb

摘要

A knee joint structure has a five-joint link structure in which there are an upper link 1 to which a thigh support part of an artificial limb 10 is fixed; a lower link 4 with which a foot part 11 of the artificial limb is linked; a rear link 5 for linking the upper and lower links 1 and 4 with each other; a main frontal link 2 linked with the frontal of the upper link 1; and an auxiliary frontal link 3 for linking the main frontal link 2 and the lower link 4 with each other. In addition, there is provided an elastic element 8 acting to increase an angle formed by the auxiliary frontal link 3 and the lower link 4.