Workers in this unit group provide special medical therapeutic services. Their functions include: treating sprains, healing fractures, paralysis and circulatory or nervous disorders by physical means, usually as prescribed by a physician; participating in planned medically oriented vocational, educational or recreational activities designed to rehabilitate physically or mentally disabled persons; massaging clients or patients to improve circulation, soothe or stimulate nerves, facilitate elimination of waste matter, stretch contracted tendons and produce other therapeutic effects.