Respect of the cervical anatomy • Minimal thickness of the prosthesis plates. • A complete range allowing a maximal coverage of the vertebral plate and the respect of the intersomatic height. • Contact between the prosthesis plates is impossible. Primary anchorage optimization • Optimization of the anchorage and of the primary stability with the lateral self retaining teeth • The inclined shape of the teeth favors the introduction of the implant while insuring a reliable anchorage on the solid parts of the vertebral plates. Respect the physiological movement • Restore the lordosis and the physiological cervical mobility. • Restore the physiological height of the disc. Flexion / Extension Lateral bending Rotation