This orthosis is a posterior Spiral spring design that extends just distal to the tibial tuberosity. This creates a long lever arm that acts directly to the anterior aspect of the Tibia. Utilizing a custom molded anterior shell that utilizes a flex zone to create an anterior swing band. Due to this, it can deliver a substantial energy storing force that is comfortable to the patient. (350nm)
The spiral design runs from the medial aspect of the posterior calf, down to the lateral aspect of the heel. This design allows for the least difficulty in accommodation of shoe wear. This is assistive in the management of a mild to moderate Valgus tendency but limited in its control of Varus tendencies.
