For custom prescription orthotics, a health professional performs a thorough health history, including an assessment of your height, weight, level of activity, and any medical conditions. A diagnosis and determination of the best materials and level of rigidity/flexibility of the orthotics is made, followed by an impression mold of your feet. This mold is then used to create an orthotic specifically for you.

The difference between OTC/kiosk and custom orthotics may be likened to the difference between over-the-counter and prescription reading glasses. A person of average weight, height, and foot type, and with a generic problem such as heel pain, usually does well with an over-the-counter or kiosk orthotic. They are less expensive, and usually decrease pain and discomfort. However, you may have to replace them more often. Someone with a specific need, or a problem such as a severely flat foot, may benefit from custom prescription orthotics. 

oot orthotic if muscles, tendons, ligaments, joints, or bones are not in an optimal functional position and are causing pain, discomfort, and fatigue. Foot orthotics can be made from different materials, and may be rigid, semirigid, semiflexible, or accommodative, depending on your diagnosis and specific needs.