An adjustable bone fusion implant includes a housing having a top surface, a bottom surface, and a pair of spaced apart expandable sidewalls extending therebetween. The top surface, bottom surface, and pair of expandable sidewalls at least partially bound a compartment therebetween. A discrete reinforcing...http://www.google.de/patents/US20030130739?utm_source=gb-gplus-sharePatent US20030130739 - Adjustable bone fusion implant and method
