SYSTEMS AND METHODS FOR USING POLYAXIAL PLATES

摘要

Embodiments of the present invention provide a bone fixation assembly that can provide polyaxial fixation. The polyaxial fixation may be provided by fins that protrude from an opening in a bone plate or fins that protrude from a fastener head.

主权项

1. A polyaxial bone fixation system, the system comprising:
(a) at least one fastener, the fastener having a head portion and a shaft portion; and (b) a bone plate comprising a lower surface, an upper surface and at least one opening extending from the lower surface to the upper surface, the opening being at least partially threaded; and (c) wherein the opening is adapted to receive the fastener without being tapped by the fastener, the fastener having an outer surface with a plurality of non-circumferential fins integrally connected to, and protruding from, the fastener, wherein the plurality of non-circumferential fins are deflectable relative to the head portion of the fastener when the fastener is inserted into the opening such that the fastener may be inserted and retained at any one of a plurality of angles relative to the opening.