Orthosis that is specially designed for the treatment of plantar fasciitis. It consists of an anatomical band of velor that closes over the top of the ankle with microhook velcro, to which is added an elastic band that passes under the ankle joint, pressing the area between the tuberosity of the calcaneus and plantar fascia. It incorporates gel pads in the anatomical velour band that increase the feeling of comfort, thus avoiding possible chafing due to pressure.