A visco-elastic motion-limiting artificial intervertebral disc prosthesis is provided that mimics the physiologic function of a normal spinal disc. The disc comprises upper and lower endplates having therewithin channels or openings for optionally receiving one or more motion-limiting members fitted...http://www.google.de/patents/US20060149377?utm_source=gb-gplus-sharePatent US20060149377 - Artificial disc prosthesis