An embodiment of an intervertebral prosthetic device for implantation in a spine includes a rigid fixation member and a compressible member. The fixation member is configured to be placed in a cavity of a first vertebral body and against bone of the first vertebral body. The compressible member is configured...http://www.google.de/patents/US8057549?utm_source=gb-gplus-sharePatent US8057549 - Apparatus and method for performing spinal surgery
