A system for providing torsional stabilization to a patient's spine comprising: a first fixation device (91, 102, 142, 143, 511) configured to fix at least one flexible implant in a lower vertebral body； a second fixation device (152, 171, 231, 243, 621, 622, 1101) configured to fix said at least one flexible implant to a spinous process of an upper vertebral body； and at least one flexible implant (51, 61, 71, 81, 141, 165, 166, 211, 213, 221, 575) fixed at a first fixation point, such as in a pedicle (9, 25, 26, 303) of said lower vertebral body (13, 33, 133), with said first fixation device (91, 102, 142, 143, 511) in said lower vertebral body (13, 33, 133), and in a second fixation point with said second fixation device (152, 171, 231, 243, 1101) in said spinous process of said upper vertebral body (12, 32, 133), such that said at least one flexible implant (51 , 61, 71, 81, 141, 165, 166, 211, 213, 221), when implanted, aligns with a plane perpendicular to the torsional rotation axis (14) of the disc (11), the plane is aligned with the disc space of the spine to stiffen a segment of torsion movement, characterized in that the system provides torsional stabilization without significantly impacting the flexion / extension or fold movements l ateral spinal segments.Un sistema para proporcionar estabilización torsional a una espina de un paciente que comprende: un primer dispositivo de fijación (91, 102, 142, 143, 511) configurado para fijar por lo menos un implante flexible en un cuerpo vertebral inferior； un segundo dispositivo de fijación (152, 171, 231, 243, 621, 622, 1101) configurado para fijar dicho por lo menos un implante flexible a una apófisis espinosa de un cuerpo vertebral superior； y por lo menos un implante flexible (51, 61, 71, 81, 141, 165, 166, 211, 213, 221, 575) fijado en un primer punto de fijación, tal como en un pedículo (9, 25, 26, 303) de dicho el cuerpo vertebral inferior (13, 33, 133), con dicho primer dispositivo de fijación (91, 102, 14
