Patent ID: 8894692

Claim:
A stabilizing assembly comprising: a fastener having an upper end and a lower end, a head at the upper end, said head including a center and at least a portion of said head having a radius of curvature from the center of the head, and at least one anchoring element between the upper and lower ends thereof; and a coupling element having an outer surface, an interior wall having a diameter, an upper end and a lower end, a rod receiving opening adapted to receive a stabilizing rod, a bore extending through the lower end for receiving said fastener, a cavity adjacent to said lower end, a seat, and an annular lip located between the upper end of said coupling element and the seat of said coupling element wherein said annular lip has a diameter less than the diameter of said interior wall and a diameter of an adjacent portion of said cavity, wherein the portion of said head having the radius of curvature is engagable with the seat when said fastener is positioned in the bore, and wherein the stabilizing rod contacts said head so that the stabilizing rod forces the portion of said head against the seat of said coupling element.