A device and method of attaching an elongated rod (50) to different vertebral members to form a spinal fixation system. The device comprises a securement member (20) having a first section (22) that is positioned within the vertebral member. A second section (24) extends laterally outward from the first section (22). A receiving member (30) is mounted to the second section (24) to receive the elongated rod (50). Receiving member (30) includes a receiver (33) for receiving and attaching to the second section (24). The receiving member (30) is laterally movable along the lateral section (24) for positioning the elongated rod (50) relative to the spine of the patient. The length of the second section (24) provides for mounting the first section (22) at a variety of anatomically conducive locations on the vertebral member while supporting the elongated rod (50).
