Abstract: A security rail attachment for a bed comprises a post with an adjustable foot at the lower end, a rail portion mounted within the post and rotatable about the vertical axis of the post and an attachment rail which extends across the end of the bed and includes clamping elements for clamping to angle irons along the sides of the bed. The rotatable rail portion can be latched at four 90.degree. spaced positions by notches in the base of a vertical post of the rail portion which cooperate with a transverse pin in the post. The rail portion can therefore project outwardly from the bed at right angles thereto for assisting the occupant in standing or can lie along the side of the bed to assist the occupant by preventing falling from that side of the bed.