Intervertebral disc nucleus replacement implants and methods are provided. The nucleus replacement implant, which is configured to reside within an intervertebral disc nucleus space, includes a core support structure, including a rotatable member and multiple vertebral support structures. The vertebral...http://www.google.de/patents/US7766967?utm_source=gb-gplus-sharePatent US7766967 - Intervertebral disc nucleus replacement implants and methods
