An intervertebral disc replacement has two members attached to vertebral bodyendplates of two adjacent vertebrae. The two members are formed withrespective articulation surfaces which form at least part of an articulationarrangement. When loaded with compressive axial force, the articulationarrangement supports the vertebral contact surfaces against the compressiveforce to ensure a predefined minimum intervertebral spacing, and allows arange of turning motion in all directions. The articulation arrangement isformed to provide an increase in the intervertebral spacing as a smoothfunction of angular displacement from a neutral position over at least part ofthe range of motion in each direction for each direction of motion, therebyproviding motion attenuation and restoring forces.
