Foot is a very important structure to achieve postural stability according to its structure and shape, so any mechanical disturbance to the foot will cause postural instability. Both orthoses can enhance balance for these children but bilateral use of the two orthoses can enhance balance better than unilateral use. Also, bilateral use of Supramalleolar orthosis has a great advantage in enhancement balance than bilateral use of University of California Biomechanics Laboratory Shoe Insert for hemiparetic children with pronated feet.