A bone anchoring element is provided comprising an 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 along the rod axis by two side walls (46a,46b), characterized in that the side walls (46a,46b) comprise guides (47a,47b47a,47b470a,470b) orientated along the rod axis for guiding at least one connection rod (3,3,3") therethrough.本案提供一種骨骼固定元件,包括:可供固定於骨骼內之固定段(41),和連接於固定段之容納件(43);其中容納件(43)包括開口(45),適於納入具有桿軸線之穩定桿(2,20),開口(45)沿桿軸線受到二側壁(46a,46b)之限制;其特徵為,側壁(46a,46b)包括導件(47a,47b47a,47b470a,470b),沿桿軸線定向,以導引至少一連接桿(3,3,3")貫穿通過。3a...連接桿第一直段4...骨骼固定元件41...螺紋幹部42...球形頭部43...容納件43a...容納件第一端43b...容納件第二端44...徑孔46a,46b...自由股部47a,47b...徑孔48...壓力元件49...球形凹部50...共軸徑孔51...圓筒節段形凹部
