The invention relates to a system which is used to fix a part to a bone element. The invention is essentially characterized in that it consists of: at least one hole which is disposed in part; a rigid rod comprising a first end, the rod being wound into a spiral along a first helicoidal curve; and a...http://www.google.fr/patents/US8142504?utm_source=gb-gplus-shareBrevet US8142504 - System for fixing a part to a bone element