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Jacobs Rods: Locking Hook Spinal Rods

- Discussion:
    - locking hook spinal rod is constructed of extra hard, 316 L stainless;
    - it is 5 x 7 mm in diameter and threaded at both ends for attachment hook, which are adjusted longitudinally using a pair of nuts;
    - hooks are rotationally locked to the rod by meshing radial grooves;
    - upper hook is provided with a cover that allows secure fixation to lamina w/o excessive distraction;
    - advantages of this rod are that it is a stiffer and stronger construct which allows a more anatomic reduction with better control of
         sagittal plane alignment