Patent ID: 8216284

Claim:
A bone fixation assembly comprising: a fixation member; at least one aperture formed through said fixation member; at least two locking features circumferentially spaced around an inner perimeter of said at least one aperture and including a first end and a second end, said at least two locking features each including a longitudinal axis extending substantially perpendicular to an axis extending through said at least one aperture; and a fastener received within said at least one aperture and including at least two discrete locking members respectively received in said at least two locking features at said first end, said at least two discrete locking members being circumferentially spaced around an outer perimeter of said fastener, extending from an outer surface of a head of said fastener, and received within said first end in an unlocked state and rotated from said first end to said second end in a locked state to restrict removal of said fastener from said at least one aperture, said at least two locking features respectively engaging said at least two discrete locking members in a direction substantially parallel to said axis extending through said at least one aperture in said locked state.