A device for stabilizing body joints, comprising: a receptacle , wherein the receptacle is filled with a filling medium , wherein the filling medium is a fluid, a first body for interacting with the filling medium , wherein the first body is slidably arranged in the receptacle , a force transmission means for transmitting an external force to the first body , a second body for interacting with the filling medium , which is slidably arranged in the receptacle , wherein a surface of the first body , relative to which the filling medium performs a relative flow movement when the first body is moved due to an external force, forms a first shear surface and a surface of the second body , relative to which the filling medium performs a relative flow movement when the first body is moved due to an external force, forms a second shear surface , wherein the second body is elastically coupled to the first body via a coupling element , the coupling element comprising a spring element, wherein the second body and/or the first body having at least one passage opening , through which the filling medium can flow, and wherein the first body forms a valve body and the second body forms a valve seat, so that a flow of the filling medium through the passage opening can be permitted or prevented depending on the valve position, characterized in in that , depending on the size of a gap size (S2) between the second body and the receptacle and/or a spring force of the coupling element and/or the second shear surface , a threshold value is defined which determines a speed of the second body at which, due to the flow of the filling medium along the second shear surface , leads to an increase in shear stress which does not permit any further movement of the second body . a receptacle , wherein the receptacle is filled with a filling medium , wherein the filling medium is a fluid, a first body for interacting with the filling medium , wherein the first body is slidably arranged in the receptacle , a force transmission means for transmitting an external force to the first body , a second body for interacting with the filling medium , which is slidably arranged in the receptacle , wherein a surface of the first body , relative to which the filling medium performs a relative flow movement when the first body is moved due to an external force, forms a first shear surface and a surface of the second body , relative to which the filling medium performs a relative flow movement when the first body is moved due to an external force, forms a second shear surface , wherein the second body is elastically coupled to the first body via a coupling element , the coupling element comprising a spring element, wherein the second body and/or the first body having at least one passage opening , through which the filling medium can flow, and wherein the first body forms a valve body and the second body forms a valve seat, so that a flow of the filling medium through the passage opening can be permitted or prevented depending on the valve position, characterized in in that , depending on the size of a gap size (S2) between the second body and the receptacle and/or a spring force of the coupling element and/or the second shear surface , a threshold value is defined which determines a speed of the second body at which, due to the flow of the filling medium along the second shear surface , leads to an increase in shear stress which does not permit any further movement of the second body . <EOS>