A disc replacement prosthesis is described which is placed within the intradiscal space vacated by a removed deteriorated disc, and which affords mobility rather than fusion between adjacent vertebral bodies. The prosthesis also protects remaining discs from deterioration by providing a shock absorbing...http://www.google.de/patents/US6231609?utm_source=gb-gplus-sharePatent US6231609 - Disc replacement prosthesis
