Method making it possible to achieve the ideal curvature of a rod for vertebral osteosynthesis equipment designed to support a patient's vertebral column
According to the invention, le precede qu'elle concerne comprend les etapes suivantes : • a) taking a sagittal preoperative x-ray of the vertebral column of the patient to be treated, extending from the cervical vertebrae to the femoral heads； • b) on that x-ray, identifying points on S1, S2, T12 et C7； • c) depicting, on the said x-ray, curved segments beginning at the center of the plate of S1 et going to the center of the plate of C7； • e) identifying, on that x-ray, the correction(s) to be made to the vertebral column, including the identification of posterior osteotomies to make； • f) pivoting portions of said x-ray relative to other portions of that x- ray, according to osteotomies to be made； • g) performing, on said x-ray, a displacement of the sagittal curvature segment extending over the vertebral segment to be corrected； • h) from a straight vertebral rod (TV), producing the curvature of that rod according to the shape of said sagittal curvature segment in said displacement position.
