The present invention relates to an orthopaedic device (1) for limiting the movement of a joint arranged between a first and a second region of a body, said device comprising at least one receptacle (2) that can be fixed on the first region of the body, and an extension element (3) that can be fixed on the second region of the body and is movable relative to the receptacle (2), wherein a volume filled with a dilatant fluid (4) is provided between the receptacle (2) and the extension element (3).