The invention relates to a system to support the ankle plantar flexion, comprising an orthosis (1) comprising a foot part with an outsole (3) and a cuff (5) for fastening the orthosis (1) in the region of the tibial head, the foot part and the sleeve (5) having a enclosing the lower leg on the leg rear spring (7) are connected. At the orthosis (7) are sensors (11) for detecting a movement pattern is positioned and the system comprises an evaluation unit which is set up such that of the sensors detected (11) data for the detection of the movement pattern are compared with nominal data and deviation information is given to the wearer of the orthosis. The invention further relates to a method of a patient for support while walking with such a system to support the ankle plantar flexion.
