Surgery planning tool for spinal correction rod

1. A method comprising:

a first step of obtaining two 2D X-ray images of a spine;

after the first step, performing a second step of making a patient specific 3D spinal reconstruction from said two 2D X-ray patient images;

after the second step, performing a third step of determining a patient specific spinal correction;

after the third step, performing a fourth step of manufacturing a surgery planning tool having a shape of a patient specific spinal correction rod implant that is over bended or under bended as compared to a final shape of the spinal correction rod implant after being implanted;

visually comparing a shape of the spinal correction rod implant with the shape, and bending the spinal correction rod implant so that the spinal correction rod implant presents curvatures corresponding to the shape; and

implanting the spinal correction rod implant such that it assumes the final shape, such that, as a result of the final shape, a straightening effort is exerted on the spine to align with the patient specific spinal correction.