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Abstract

An artificial intervertebral disc that uses two orthogonally-oriented cushions, one with a greater height than width and the other with a greater width than height, comprised of a resilient material and affixed to each other in a manner to resist relative movement therebetween, to maintain the spacing between the vertebrae adjacent an intervertebral disc, to distribute and cushion against compression loads, and to mimic the normal kinematics of the intact, healthy intervertebral disc. One of the two cushions at least partially surrounds a frame that both provides resistance to compression and tension loads and translates the axis of rotation of the spinal column anteriorally and posteriorally as the patient bends and rotates.

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First Claim