An orthotic is a foot-supporting device that fits inside shoes. This support allows the feet and lower legs to function at their highest potential. Orthotics can decrease pain, alleviate pressure, and increase stability in an unstable joint. In addiction, orthotics are used to treat specific pathologies (ailments) such as diabetes, plantar fasciitis, hammer toes, heel spurs, and arthritis. A proper orthotic should fit perfectly with the contour of the foot. Orthotics are built from a prescription written by a Podiatrist. Custom insoles are built from an assessment by a trained individual such as a Pedorthist.