Figure 6 | Scientific Reports

Figure 6

From: Improved fixation stability for repairing pedicle screw loosening using a modified cement filling technique in porcine vertebrae

Figure 6

Schematic illustrations of the traditional group. The 48 mm depth enlarged screw tract was created by 5.5 mm twist metric drill bit (A). A total of 0.8 ml of PMMA (with consistency similar to that of toothpaste) was retrograde injected into the enlarged screw hole (B). A diameter × length of 5.0 mm × 45 mm salvage screw was gradually implanted into the PMMA-filled screw hole (C) until all threads were fully covered (D).

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