An artificial intervertebral disc for at least partially replacing a
diseased or damaged intervertebral disc. The artificial disc includes a
concave-convex articulating surface. The artificial disc can be used in
the cervical region of the spine, where a concave-convex articulating
surface is advantageous for improved anatomical fit and region
appropriate kinematics. The artificial disc of the present invention also
includes an anchor for attachment to bone.