"Orthotics is the use of braces and splints (orthoses) to biomechanically assist in supporting and stabilizing parts of the body affected by paralyzed and/or weak muscles (Bunch, 1985). Orthotics, grouped by a description of the area in which they provide support, are usually divided into three categories: lower extremity, upper extremity, and spinal. For example, in lower extremity orthotics, foot orthoses (FO) support and align the foot. Knee orthoses (KO) protect and support the knee joint. An orthotic device designed to support the whole lower extremity is called a knee-ankle-foot orthosis (KAFO). Upper extremity and spinal orthotics have similar classifications." (Quote Source: Post Polio Health International)