| 摘要 |
Device including securing elements (24) with the head being expanded by means of an expansion screw, joining members (3, 4, 5, 6, 7) suitable for coupling to the corresponding securing elements (24), and flexible longitudinal rods (2) with a high elastic limit passing through said joining elements, to which said rods can be fixed using clamps. The device is suitable for rear a front fitting.
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