Abstract: The invention relates to an orthosis comprising: a first fastening element (15) for fastening a first orthosis component (10) to a proximal body part of a user; a second orthosis component (20) having a second fastening element (21) for being fixed to a distal body part of the user; and a joint device (30) which is located at the proximal end (22) of the second orthosis component (20) and which has a joint upper part (40) and which makes it possible for the second orthosis component (20) to pivot about a joint axis (4) in the sagittal plane relative to the joint upper part (40), the joint upper part (40) being mounted or designed on the first orthosis component (10) in a fastening device (11) so as to be pivotable and/or displaceable in the frontal plane and so as to be rotationally rigid in the sagittal plane.

Abstract: The invention relates to an orthopedic device with an energy storage device 2 that comprises at least one cylinder 4, in which a first cylinder chamber 6, a second cylinder chamber 8, which is fluidically connected to the first cylinder chamber 6 by at least one fluid line 14, and a piston 10 are located, wherein the piston 10 is arranged relative to the cylinder 4 such that it can be displaced in such a way that by displacing the piston 4, an operating medium, which is a fluid, is conveyed through the at least one fluid line 14 from one cylinder chamber 6, 8 into the other cylinder chamber 8, 6, wherein the energy storage device 2 has at least one compensation volume 24, which is fluidically connected to the fluid line 14 via a fluid connection 22, and a first controllable valve 26, by means of which the fluid connection 22 can be opened and closed.