Articulated expandable spinal fusion cage system

摘要: An apparatus and method for implanting an articulated spinal fusion cage into the intervertebral space adjusting in situ to support adjacent vertebrae a normal curved alignment. The invention provides greatly improved modular system having base unit with pair of sockets receiving ends legs. permit pivotal movement legs about posterior fulcrum from closed, parallel insertion position anteriorly open, wedge-shaped orientation. has threaded bore driver, which is operable urge anterior apart as well front installed cage. Interchangeable drivers are provided various sized tips. interior end surface each leg includes driver-receiving groove providing torsional stability. Alternatively, pins bores on inner surfaces opposed driver tip. In certain embodiments integral construction one legs, socket pivot second leg.