#$%^&*AU2011250692A120120531.pdf#####PEDICLE SCREW Abstract The invention relates to a pedicle screw for implants for correcting and stabilizing the spinal cord, having a screw head (2) located at one axial end of a screw shaft (1) and a tulip head (3) having a screw-head seat (4) open downward for the screw head (2), and a rod seat (6) between flanks (5) of the tulip head (3) for the fixation of a rod. A head retainer (7) in the screw-head seat (4) underneath the screw head (2) is radial to the longitudinal head axis (8) on at least one radial pivot pin (9).