AFO with Calliper
The orthosis is attached to the shoe with a stainless steel calliper. There is a spring in the ankle joint when the foot has not got spasticity. In that case 10 degrees of plantar flexion is allowed in order to help heel strike. Without the spring 0 degrees of plantar flexion and 15 degrees of dorsi flexion is allowed. The side bar is on the opposite side of the instabile side. I.e. if the ankle goes to varus, the bar is on the medial side of the leg. All the shoes the patient wears with the orthosis, have to be equipped with a calliper.