Bone plate systems and anchor retainers are provided for use in surgical implants and bone repair. In a preferred form, the bone plate may include bores for receiving the bone anchors, and the bores may permit and define a path of translation or shifting of the bone anchors relative to the bone plate....http://www.google.fr/patents/US7740649?utm_source=gb-gplus-shareBrevet US7740649 - Bone plate system and methods