A spinal stabilization system, comprising: a plurality of anchors , each anchor comprising: a clamp comprising a body with a head and a first arm and a second arm , which second arm comprises an elongate lever and a foot , wherein the clamp is configured to engage an anatomical element with a first contact surface of the first arm and a second contact surface of the second arm , the clamp movable between a fully open position and a fully closed position; a locking screw configured to selectively prevent the clamp from being moved into the fully open position, wherein the locking screw comprises a threaded shaft , wherein the threaded shaft is adapted to be received by an internally threaded aperture on the first arm ; and a bridge interface in the head ; and at least one bridge comprising a rigid member having a first end and a second end opposite the first end, each of the first end and the second end comprising an anchor interface ; wherein the bridge interface is configured to receive the anchor interface , characterized in that the locking screw also comprises an engagement head , wherein the engagement head is configured to press against a surface of the second arm , so that the second arm can be prevented from rotating, the internally threaded aperture of the first arm is positioned between the first contact surface of the first arm and the head , and the surface of the second arm is positioned between the second contact surface of the second arm and the head . a plurality of anchors , each anchor comprising: a clamp comprising a body with a head and a first arm and a second arm , which second arm comprises an elongate lever and a foot , wherein the clamp is configured to engage an anatomical element with a first contact surface of the first arm and a second contact surface of the second arm , the clamp movable between a fully open position and a fully closed position; a locking screw configured to selectively prevent the clamp from being moved into the fully open position, wherein the locking screw comprises a threaded shaft , wherein the threaded shaft is adapted to be received by an internally threaded aperture on the first arm ; and a bridge interface in the head ; and a clamp comprising a body with a head and a first arm and a second arm , which second arm comprises an elongate lever and a foot , wherein the clamp is configured to engage an anatomical element with a first contact surface of the first arm and a second contact surface of the second arm , the clamp movable between a fully open position and a fully closed position; a locking screw configured to selectively prevent the clamp from being moved into the fully open position, wherein the locking screw comprises a threaded shaft , wherein the threaded shaft is adapted to be received by an internally threaded aperture on the first arm ; and a bridge interface in the head ; and at least one bridge comprising a rigid member having a first end and a second end opposite the first end, each of the first end and the second end comprising an anchor interface ; wherein the bridge interface is configured to receive the anchor interface , characterized in that the locking screw also comprises an engagement head , wherein the engagement head is configured to press against a surface of the second arm , so that the second arm can be prevented from rotating, the internally threaded aperture of the first arm is positioned between the first contact surface of the first arm and the head , and the surface of the second arm is positioned between the second contact surface of the second arm and the head . <EOS>