Helps patient accomplish treatment plan and accept therapeutic devices by administering manual exercises; instructing, encouraging, and assisting patients in performing physical activities, such as nonmanual exercises, ambulatory functional activities, and daily-living activities and in using assistive and supportive devices, such as crutches, canes, and prostheses. Administers physical therapy treatments by giving massages; initiating traction; applying physical agents; utilizing hydrotherapy tanks and whirlpool baths, moist packs, ultraviolet and infrared lamps, and ultrasound machines; directing treatments given by aides, technicians, and assistants.