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.
Word Origin & History. principle c.1380, fundamental truth or proposition, from Anglo-Norm. principle, from O.Fr. principe, from L. principium (pl. principia) a beginning, first part, from princeps (see prince). Meaning origin, source is attested from 1413. Sense of general rule of conduct is from c.1532.