A spine fixation system (10) comprises a rod (12a, 12b), which is configured to extend over a portion of the spine, a plurality of fasteners (14) and a plurality of connectors (18). Each fastener has a longitudinal axis (22) and is configured to be secured to a vertebra (V1, V2, V3) to be treated. Each connector (18) is connected to, or is capable of being connected to, one of the fasteners (14) and has a seat member (20) for receiving and fixing the rod (12a, 12b). The seat member (20) is capable of being fixed in different rotational positions with regard to a rotational axis (46) that extends, or is capable of being positioned such that it extends, parallel to but not coinciding with the longitudinal axis (22) of the fastener (14) to which the respective connector (18) is connected.
