A bone screw for pelvic bone fixation, the bone screw comprising an elongatebody havinga first end which is threaded for engaging at least one bone in the pelvicregion, a secondend comprising a screw head, and at least one opening across the length of theelongatebody for adjustably receiving a fastening means to limit movement of the bonescrewaway from the engaged bone in use, wherein the at least one opening is shapedsuchthat the position of the fastening means relative to the elongate body of thebone screwcan be adjusted. A system for bone fixation in the pelvic region includes thebone screwand the fastening means.
