Swivel connection between two parts of an orthopedic technical aid

The swivel connection as claimed in claim further comprising a resistance device counteracting said length alteration.

The swivel connection as claimed in claim wherein the swivel stop is adjustable.

The swivel connection as claimed in claim wherein the maximum extent of the shortening of the articulation member or of the displacement of the articulation point is limited by a length stop.

A swivel connection provided between two movable parts of an orthopedic device comprising a plane kinematic articulation chain having at least four articulation members and exhibiting a polycentric swiveling characteristic consisting of translatory and rotatory components, wherein a swiveling movement of at least one articulation member is limited in at least one swivel direction by a swivel stop and the length of at least one articulation member is variable by action of an external force, wherein a first part of the orthopedic technical aid constitutes a thigh prosthesis, a second part constitutes a lower leg prosthesis, and a four-membered articulation chain constitutes a knee joint, whose two articulation members connected securely to the thigh prosthesis and lower leg prosthesis, respectively, are connected to one another by a third, extensor-side coupling, articulation member used for setting the extension position and by a fourth, flexor-side couplings articulation member at articulation points, wherein the length of said fourth, flexor-side coupling, articulation member is variable in a spring-elastic manner under load, and wherein the articulation point connecting the fourth, flexor-side coupling, articulation member to a lower articulation member is arranged longitudinally displaceable within the lower articulation member and can be fixed in a desired position.