Abstract: There is provided a support for the arms of a patient undergoing x-ray analysis or treatments requiring raising an arm above one's head and maintaining the arm in that position for any length of time. The use of the apparatus is comfortable and reduces stess. A header is adapted to be secured to the head end of the table supporting the patient. A pair of posts are fixed to and upstand from the header and each carries a horizontally disposed elongated arm rest in cantilever fashion with the post protruding above the arm rest to form a hand grip to be grasped by the patient lying on his back on the table. Each arm rest has an arm restraining upstanding flange on its external side. The level and angular position of each arm rest can be adjusted. Each arm rest can be installed below the table when the patient is to be treated in prone condition.