A device for support and elevation of the lower extremities. More specifically, the invention is a leg elevator that provides calibrated, adjustable support for the upper leg, the lower leg and the foot. The leg elevator is adjustable to many different positions through the use of three independent adjustment mechanisms. The upper leg portion of the leg elevator can be adapted to accommodate people that have upper legs of various lengths. The height of the lower leg portion is also adjustable, and the relative angular position of the upper and lower leg can be varied from a generally flat position, to a substantially bent position. The invention can be used to provide elevation for either leg separately or for both legs simultaneously. The leg elevator is lightweight, easily disinfected, and can be collapsed to a relatively flat position for ease in transport and storage.