What is the medical term meaning a brace that worn to improve function of leg?

The medical term for a brace that is worn to improve the function of the leg is called an orthotic. Orthotics are devices that are used to support, align, prevent or correct deformities or to improve the function of movable parts of the body. They are often used to treat a variety of conditions, such as foot pain, ankle sprains, knee injuries, and back pain. Orthotics can be custom-made to fit an individual's specific needs and may be used in conjunction with other treatments, such as physical therapy or surgery.