A prosthesis system comprises plates that can be positioned against vertebrae and a selected resilient core that can be positioned between the plates to allow the plates to articulate. The selected resilient core can be chosen from a plurality of cores in response to patient characteristics, such as...http://www.google.ca/patents/US20090043391?utm_source=gb-gplus-sharePatent US20090043391 - Customized Intervertebral Prosthetic Disc with Shock Absorption
