Patent ID: 8840575

Claim:
A knee orthosis for a leg, comprising: a lower leg mounting part and an upper leg mounting part; a knee guide joint, having at least one orthotic fitting unilaterally connecting said lower leg mounting part and said upper leg mounting part in an articulated manner forming a knee joint support, said orthotic fitting having two leg parts rigidly connected to said lower leg mounting part and said upper leg mounting part, respectively, said leg parts each having leg ends directed toward each other; wherein said knee guide joint including a four-joint arrangement having four axially parallel joints; first and second angled lever parts respectively disposed at each of said leg ends and having at least two pivot bearings spaced apart from each other; and at least a first pivot element connecting a first of said pivot bearings of the angled lever part being located nearer the leg to a second of said pivot bearings of the other of said angled lever parts being located further from the leg; a first spacing (a) of said pivot bearings on said first angled lever part of a first lower distal one of said leg parts, being equal to a second spacing (b) of said pivot bearings on said first pivot element between one of said pivot bearings remote from the leg on said first angled lever part and another of said pivot bearings near the leg on said second angled lever part of a second upper proximal one of said leg parts; a third spacing (c) of said pivot bearings on a second pivot element between the pivot bearing remote from the leg on said second angled lever part and the pivot bearing near the leg on said first angled lever part being equal to the first spacing (a); and a fourth spacing (d) of said pivot bearings on said second angled lever part being equal to half the first spacing (a).