A bone anchoring element is provided comprisingan anchoring section (41) for anchoring in the bone and a receiving part (43) connected to the anchoring section,wherein the receiving part (43) comprises an opening (45) suitable for accommodation of a stabilization rod (2,20) having a rod axis, the opening (45) being limited perpendicular to the rod axis by two side walls (46a,46b),characterized in that the side walls (46a,46b) comprise guides (47a,47b47a,47b470a,470b) orientated parallel to the rod axis for guiding at least one connection rod (3,3,3) therethrough.
