This course will introduce the fundamental principles involved in the application of basic orthotic devices and physical agent modalities in OT practice. Emphasis is placed on anatomical and biomechanical principles as they pertain to orthotic design and utilization, principles of orthotic selection/application and the fabrication process of four basic orthoses. Theoretical principles and physiological, neurophysiological, and electro physical changes that occur because of the application of selected physical modalities, and instruction on safe and effective application of therapeutic hydrotherapy, thermotherapy, and electrotherapy when used as an adjunct to, or in preparation for, therapeutic occupation.