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Abstract

A method of using an intervertebral disk prosthesis includes the step of ensuring that the intervertebral space between first and second vertebrae of a patient is substantially free of nuclear matter. The method also includes the step of inserting a distal end of the disk prosthesis into a gap between the first and second vertebrae. The disk prosthesis includes a first part with a convexly-shaped and rounded outer surface and an inner surface having a concavely-shaped socket. The disk prosthesis also includes a second part that has a convexly-shaped and rounded outer surface and an inner surface that has a convexly-shaped portion that at least partially engages with the socket thereby allowing at least two-degrees of freedom of movement of the first part with respect to the second part. The method further includes the step of permitting the top of the first part to contact the first vertebra and the bottom of the second part to contact the second vertebra.

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First Claim