A bone plate that is inserted into a vertebral column includes a hole, an eccentrically-shaped annulus, and a channel. The hole includes an eccentrically-shaped sidewall and the annulus includes an aperture positioned on an upper surface of the annulus. The hole is configured to receive a bone screw. The channel is positioned adjacent to the sidewall and adapted to hold the annulus. The channel may permit the annulus to rotate with respect to the sidewall. The channel may include a notch and the annulus may include a flared end. The flared end may be adapted to fit into the notch of the channel. A portion of the annulus may be adapted to cover a portion of the bone screw. As the annulus rotates with respect to the sidewall, the portion of the annulus may cover the portion of the bone screw.
