The invention concerns an implant for replacing a vertebra at least partially, consisting of two parts adapted to be mutually connecting while enabling the adjustment of the implant total dimension, each part having an invariable dimension homologous with the implant dimensions. The parts form a screw-nut...http://www.google.co.uk/patents/US6908485?utm_source=gb-gplus-sharePatent US6908485 - Implant for replacing a vertebra
