Variable angle bone fixation device

摘要

A bone fixation element includes a threaded head and a shaft extending along a longitudinal axis from a proximal end to a distal end, an outer surface of the head being one of carburized and nitrided and including a first groove extending into an outer surface of the head along a path interrupting the threading and extending along an angle counter to an angle of the threading.

主权项

1. A system for bone fixation, comprising:
an elongated bone implant having a shaft configured for insertion into a bone in an operative configuration and being formed of a ferrite-free implant grade material, an outer surface of the bone implant being one of carburized and nitrided to have a first hardness and to increase a corrosion resistance; and a bone fixation plate having an opening extending therethrough from a first surface configured to contact the bone in an operative configuration to a second surface located opposite the first surface, the opening being configured to receive the bone implant therethrough, the bone fixation plate having a second hardness; wherein the first hardness is greater than the second hardness.