A method of constructing a total contact cast that includes the steps of wrapping a lower leg with foam from above the malleoli to mid calf covering the foot and lower leg with stockinette covering the foot and ankle with cast padding and applying cast tape to the leg over the previously applied foam and allowing the cast tape to harden. A foam pad and lateral and medial malleolar pads are applied to the leg section of the cast and a foot and ankle positioning device is applied to the leg and cast tape is applied over the lower leg and foot and allowing the cast tape to harden. A walking support is applied to the foot. A foot and ankle positioner for a total contact cast is also disclosed.