Pedicel screw and correcting and supporting apparatus comprising such screw

A correction and supporting apparatus for a spinal column having vertebrae (5, 6, 56) comprising two pairs of screws (1, 3;

• 2, 4), each screw having a threaded shaft (7) and a receiver member (8), each pair of screws (1,3;
• 2, 4) to be anchored in a vertebra, a first pair of threaded rods (45, 46) each of said rods (45, 46) connecting with two of said screws (1, 4;
• 2, 3) on a first connecting point on said two of said screws respective receiver member (8), and a second pair of threaded rods (29, 30) each respective one of said second pair of threaded rods (29, 30) connected to two of said screws (3, 4;
• 1, 2) on a connecting point shifted with respect to said first connecting point towards said threaded shaft (7) of each connected screw, said first and second pairs of rods (45, 46, 29, 30) for bridging at least one further vertebra (56) in between said vertebrae (5, 6), a pedicel screw (58, 59) which is adjustable such that a thrust may be applied on said at least one further vertebra (56) in a direction to move it away from said correction and supporting apparatus.