The link (32) on the outside of the foot may be displaced in a forward position. Alternatively the link (34) on the inside of the foot is displaced in a backward position. It is displaced in the lengthwise direction (A) of the shoe in relation to a middle position (M) between the outer (24) and inner (26) ankle-bone of the upper ankle joint. The sleeve element (30) is linked to the clamp element (28) on the inside and outside of the foot so that a projection (P) of the straight connecting line (G) between the two links (32, 34) includes an angle of between 10 and 30, pref. 20 deg. on a horizontal plane (E) parallel to the lengthwise direction of the shoe.
