An implant having a first member having a first elongated channel and a second member having a second elongated concave channel that becomes generally opposed when the first and second members are mounted to a first and second vertebra. A ball bearing is received in each of the channels to both separate and maintain a predetermined distance between the first and second member and also to facilitate movement in a plane that intersects an axis of the spinal column. The ball bearing is seated in and cooperates with the channels to permit pivotal movement about a plurality of axes. A method for replacing a disc is also shown using the implant.