Orthotics are orthopedic
devices that are used to alter or modify foot function and are designed
to treat, adjust, and support various biomechanical foot disorders.
Some orthotics are simple, commercially-made devices, such as cushioned
heel cups or insoles for shoes that are sold over the counter in drug
stores or other retail establishments.
The most
effective orthotics, however, are custom-made devices that are crafted
to meet the specific needs of a particular individual. Custom orthotics
are created using an impression of the foot called a cast, which duplicates
any misalignments in foot structure. Using the cast and computer technology,
technicians in an orthotic laboratory design a device that balances
out deformities and corrects misalignments.