An orthotic fitting has a knee guide joint and two leg parts, which can be rigidly connected to a lower leg mounting part and an upper leg mounting part, respectively. The knee guide joint has a four-joint arrangement having four axially parallel joints, arranged so that, at the ends of the leg parts in each case angled lever parts are configured, each having two swivel bearings arranged at a distance from each other, and that in each case the swivel bearing of an angled lever part closer to the leg is connected to the swivel bearing of the other angled lever part further from the leg, in each case by a swivel element.
