A two-piece fusion cage having ramped interior surfaces. One advantage of such a cage is its easy insertion. In a first step, the lower component is inserted into the disc space and is held in place. The first step confirms placement of the implant and its footprint. In a second step, the upper component is inserted into the disc space by sliding its interior surface along the opposed interior surface of the lower component. This two-step method of insertion eliminates the need to provide an independent distraction means.