Surgical anchor device with captive fastener

A spinal alignment apparatus comprising:

• a flexible cord;
• and
• a plurality of anchor devices for securing the cord to a plurality of vertebrae during a spinal alignment procedure, each of the anchor devices comprising:
• a post;
• a cord housing fixedly coupled to the post, comprising:
• a cord channel extending through the housing, for receiving insertion of the cord therethrough;
• and
• a socket extending through the housing, the socket comprising:
• socket threads for receiving a threaded fastener, and
• a socket aperture opening into the cord channel;
• and
• a threaded fastener comprising fastener threads mated to the socket threads, wherein the threaded fastener is held captive in the socket;
• wherein a countersunk shoulder is located adjacent the soul t aperture, the countersunk shoulder wider than the socket aperture, and the threaded fastener further comprises a flange having a diameter wider than the socket aperture;
• whereby, the threaded fastener is threaded into the socket via the socket aperture in the cord channel until the flange of the threaded fastener abuts in parallel contact with the countersunk shoulder to prevent the threaded fastener from being threaded through and out of the top of the socket.