Importance

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Abstract

The present invention relates to an exoprosthesis for the human knee joint consisting of a thigh part (1) which can be connected to the human thigh as well as a lower leg part (6) which can be connected to the human lower leg or which can replace it. The lower leg part (6) and the thigh part (1) are connected through a four-bar arrangement which consists of two parallel arranged partial joints, specifically a medial joint (11) and a lateral joint (10) each of which has the joint geometry of a link chain with two articulated axles (M.sub.u, M.sub.o ; L.sub.o, L.sub.u) (dimer link chains). The joint geometry of the medial joint (11) is designed as an overlapping, dimer link chain in which the articulated axle M.sub.u of the lower leg part (6) is displaced in the direction towards the thigh part (1) with respect to the articulated axle M.sub.o of the thigh part (1) and the joint geometry of the lateral joint (10) is designed as an extended dimer chain in which the articulated axle L.sub.u of the lower leg part (6) is displaced with respect to the articulated axle L.sub.o of the thigh part (1) in the direction towards the lower leg (8). Both articulated axles of the lateral joint (10) and the medial joint (11) are connected with one another in an articulated manner in each case by means of a coupling link (13,14).

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First Claim