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Pedicle screw insertion

Pedicle screws are inserted one or two levels above and below the tumor on both sides.

In cases of multilevel tumors or poor bone quality this construct can be extended.

In tumor patients achieving optimal screw purchase is even more important than in trauma patients to minimize risk of pullout.

Optimal pedicle screw purchase will, in order of importance, be achieved by:

  1. Selecting the largest possible screw diameter
  2. Selecting the longest possible screw
  3. Positioning of the screw under the cranial endplate
  4. Cement augmentation of the screw.