Cervical total disc replacements. A, Prodisc-C (Johnson and Johnson). B, Bryan Cervical Disc (Medtronic). C, PCM Cervical Disc (Medtronic). D, Mobi-C Cervical Disc (Zimmer Biomet). E, Prestige LP (Medtronic). F, SimplifyDisc (Simplify Medical). G, M6-C Artifical Cervical Disc (Spinal Kinetics.).