Ankle foot orthosis

An ankle foot orthosis (AFO), comprising:

• a carbon fiber strut that includes a carbon fiber foot plate;
• a formable layer that is coupled with the carbon fiber foot plate, the formable layer being formable from an initial shape to a formed shape;
• an inner boot, where the formable layer being formed into the formed shape is configured to be formed around geometry of portions of the inner boot;
• a moldable calf piece that is configured to be attached to the carbon fiber strut;
• a spiral strap that is coupled between the moldable calf piece and the inner boot;
• a calcaneus strap that is coupled between the spiral strap and the inner boot;
• wherein the inner boot comprises a mid-foot/fore foot strap slot and a calcaneus strap slot, the calcaneus strap slot being positioned posterior from the mid-foot/fore foot strap slot on the inner boot;
• wherein the spiral strap enters the inner boot on a first side of the inner boot, travels along an interior surface of the inner boot, and is coupled with the mid-foot/fore foot strap slot on a second side of the inner boot, the second side of the inner boot being on an opposing side of the inner boot from the first side of the inner boot;
• and
• wherein the calcaneus strap enters the inner boot on the first side of the inner boot, travels along the interior surface of the inner boot, and is coupled with the calcaneus strap slot on the second side of the inner boot.