Figure 1 | Scientific Reports

Figure 1

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

Figure 1

X-ray images of the traditional group. An enlarged screw hole was created and confirmed using axial (A) and sagittal X-ray (B) images prior to implantation (white arrow). A cylindrical (C) or conical (D) repair screw was convergently inserted into the 5.5 mm diameter enlarged screw hole after it was filled with PMMA. The tip of the inserted screw did not exceed the enlarged depth, and no signs of fracture or damage were detected in the vertebrae.

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