The invention relates to a lower leg-foot orthosis for controlling the relative position of the foot and the lower leg of a person wearing the orthosis, wherein the orthosis is provided with a foot section for placing under a foot, the longitudinal direction of which corresponds to the longitudinal direction of the foot, and a lower leg section for placing against the lower leg, the longitudinal direction of which corresponds to the longitudinal direction of the lower leg, and a bendable heel section which connects the foot section to the lower leg section and the bending direction of which lies substantially in a plane in which the longitudinal direction of the foot and of the lower leg is located, wherein the heel section extends a certain distance between the foot section and the lower leg section, and the bending of the heel section is distributed uniformly over this distance. Enlarging the bending area makes the degree of bending smaller so that fatigue is reduced and the lifespan of the orthosis is increased.