A method of fusing a joint between two bones, comprising boring a hole through one of the bones across the joint therebetween and into the other bone, placing the leading end of a screw into the hole, where the screw has a threaded region having a pitch that is larger toward a leading end of the screw...http://www.google.fr/patents/US8070786?utm_source=gb-gplus-shareBrevet US8070786 - System for fusing joints
