Occipital fixation system and method of use

Abstract

Disclosed is a multi-axial occipito-cervical connection system that enables an occipital rod to be coupled to a cervical rod in a manner that permits multi-axial, relative movement between the two rods about a predetermined location, such as the heads of the rods. The system includes a locking mechanism that can be actuated to lock the relative positions of the rods. The rods can provide an interconnection between one or more attachments on the skull (such as an occipital attachment) and one or more attachments to the spine (such as spine screws).

1 . A fastening button for fastening a device to a bone, comprising:
 a base having an engagement surface for engaging a surface of the bone having a hole; and   a post extending outwardly from the base, an outer surface of the post configured to engage an edge of the hole in the bone, wherein the post is positioned in an off-center location relative to the base.   
   
   
       2 . The fastening button of  claim 1 , wherein the base is circular. 
   
   
       3 . The fastening button of  claim 1 , wherein the post is threaded and is configured to mate with threaded nuts for coupling the fastening button to a skull attachment device.