Bone screw implant for sacroiliac joint fusion

摘要

The bone screw for sacroiliac joint fusion is characterized by a longitudinal bone screw and a cylindrical sleeve accommodated on the proximal end of the bone screw. The sleeve generally has pins or flutes extending axially on an outer surface extending from one end of the sleeve to the other end of the sleeve. This feature helps the sleeve to resist reverse rotation, so that once the bone screw is installed, it prevents the bone screw from falling out. The bone screw is a self-tapping tip that allows the bone screw to be installed without the need for a pilot hole, and the bone debris generated by the installation of the bone screw for use as a graft for bone fusion into the bone screw and the bone screw. Thus, it has a self-harvesting geometry that collects and maintains.