The present invention discloses a prosthetic device for correcting deformity of the spine including a prosthetic device main body being inserted into an intervertebral disk, and having a variable height to correct deformity of the spine, and a control strip inserted into the prosthetic device main body,...http://www.google.de/patents/US6723128?utm_source=gb-gplus-sharePatent US6723128 - Prosthetic device for correcting deformity of spine
