Orthopaedic device with cam for a joint

An orthopedic device intended to equip a joint, said joint comprising an upper lever and a lower lever, the respective ends of which have an upper bearing surface and a lower bearing surface opposite one another, said levers being pivotable relative to one another around their respective bearing surfaces and in a pivoting plane called sagittal plane, between an extension position wherein said levers form between them an angle of at most 180 degrees, and a flexing position wherein said levers form between them an angle of at least 20 degrees, the orthopedic device comprising an upper cam and a plate not directly connected to one another, the upper cam being joined to an upper fastening element provided to rigidly connect the upper cam to the upper lever, the plate being joined to a lower fastening element provided to rigidly connect the plate to the lower lever, the upper cam and the plate being provided in order to be arranged outside the joint so as to relieve the joint when it is under load,

• wherein the upper cam has a cam surface whose generatrix has a convex curved profile, in the sagittal plane,
• in that the plate comprises a substantially planar upper track, with a rectilinear profile in the sagittal plane,
• the profile of the cam surface and the relative positioning of the cam surface with respect to the upper track being configured to ensure continuous contact of the upper cam against the upper track during the entire pivoting of the upper lever relative to the lower lever, when the orthopedic device is mounted on the joint, by making it possible to immediately follow the kinematics of the movement of the joint, with its imperfections, variations, including angular movements, in a horizontal transverse plane, of the upper lever relative to the lower lever,
• and in that the plate and/or the upper cam are each connected to the associated fastening element by a single fastening rod.