The present invention relates to a spinal stabilization system, comprising: first and second anchor members configured to be secured to first and second vertebrae, respectively, within a patient's body; a flexible element secured to the first anchor member and having an end portion; a rigid element secured to the second anchor member and having an end portion with an end surface, an axial bore extending from the end surface, an outer surface, and first and second openings on the outer surface extending into the axial bore, the axial bore receiving the end portion of the flexible element; a needle member inserted through the first opening to retain the end portion of the flexible element within the axial bore; and a fastener extending through the second opening to further retain the flexible element in the axial bore, the fastener having a top surface spaced apart from the outer surface of the rigid element in an initial position and substantially flush with the outer surface in an installed position.