COMPRESSING SCREW

摘要

FIELD: medical engineering. SUBSTANCE: device has rod having buttress thread on its end for being introduced into proximal bone fragment and bushing having threaded outer surface mounted on rod end for being built in into distal bone fragment. Buttress grooves are produced on the internal bushing surface for drowning feathers. EFFECT: enhanced effectiveness in creating monodirectional dynamic compression between bone fragments; eliminated screw loosening. 2 dwg