Device (100) for assisting with mobilizing a joint (3) comprising, when the person wears a first and a second guiding element, the first flexible guiding element (102) being positioned on one of the segments (4), having a first pair of cable passages arranged on the side of the rear face (52) and on the side of the front face (54), the second flexible guiding element (104) being positioned on the other of the segments (5), having a first pair of cable passages, arranged on the side of the rear face (52) and on the side of the front face (54), the second guiding element further comprising a pair of anchoring points arranged on the side of the front face (52) and on the side of the rear face (54), a flexible support part on which a pair of actuators (M11, M12) associated with a pair of winders are arranged, to cause the associated winder to turn in the winding direction and the unwinding direction, and a pair of cables (C11, C12) extending from the winders, up to the anchoring points of the second guiding element, passing through the cable passages of the first pair of cable passages of the first and second guiding elements.
