The present invention provides an improved orthopedic system in which the part of a device that attaches to the bone is detachable from the rest of the device. The system includes a proximal bone anchor, associated proximal fastener, a distal bone anchor, and associated distal fastener. The bone anchors...http://www.google.com/patents/US6884243?utm_source=gb-gplus-sharePatent US6884243 - Orthopedic system having detachable bone anchors
