A device for examining limb joints comprises a support frame to which are attached mechanisms with holders for positioning patient's limbs in the region encompassing patient's hips, thighs and feet, said mechanisms being made of materials that do not interact with magnetic fields. A hip belt (B) is secured to special ports on both sides of the support frame (A) of the device, then a thigh support platform (C) is secured to the support frame on a swingable hinge, and a shank support assembly (D) is secured in the middle part, where on a common adjustment screw guided by a slider and locked in position on the support frame by means of a position nut is located a fixed casing combined with a nut and with two force measurement assemblies. A feet support assembly (E) is secured to the opposite side of the frame. The second variant of the device consists of only the following groups: the support frame (A), the thigh support platform (C) and the shank support assembly (D).