They are also used to immobilize the ankle and lower leg in the presence of arthritis or fracture, and to correct foot drop; an AFO is also known as a foot-drop brace. Ankle-foot orthoses are the most commonly used orthoses, making up about 26% of all orthoses provided in the United States.
adjective. noun. Fundamental is defined as something that is basic or essential. The most basic underlying truth of a religion is an example of a fundamental truth. The definition of fundamental is a basic truth or law. Freedom is an example of a fundamental of the American ideal.
basic (comparative more basic, superlative most basic) 1  Necessary, essential for life or some process. Flour is a basic ingredient of bread. 2  Elementary, simple, fundamental, merely functional. The Hotel Spartaâs accommodation is purely basic. ( 3 chemistry) Of or pertaining to a base; having a pH greater than  7.