Why do all orthotics have arch supports?
Most traditional orthotics are based on a static view of your feet. This is where the term “fallen arches” comes from. Compared to the arch of your foot when it is not supporting your weight, your arches fall when they are weight bearing. The old theory (Root’s) about how the foot is supposed to work generally suggests that the non-weight bearing arch be maintained which is done by blocking the movement of the arch. That is why many podiatrists will make a non weight-bearing cast of your foot. That is the way they were trained. Proprioceptive stimulation orthotics generally do not make use of an arch support.