Abstract: The disclosure is related to an ankle-foot orthosis element and a method of manufacturing therefor and provides for stability in a lateral direction as well as in a front-rear direction of an ankle-foot orthosis element. Moving or sliding of the orthosis in relation to the shoe is prevented. In one embodiment an ankle-foot orthosis element is provided, which comprises a base plate element (30), at least one supporting element (21, 22) supported by the base plate element (30); a top section (23) supported by the at least one supporting element (21, 22) and wherein the base plate element (30) comprises a concave shape for fixation of the ankle-foot orthosis element in a foot wear, such as a shoe or a sport shoe.