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Evidence of screw loosening. CT of a 17 years old girl following segmental pedicle screw fixation T3-L3: (A-B). (A) axial image showing evidence of loosening around the screw through the right pedicle of T3 and to lesser extent around the screw through the left pedicle. (B) sagittal image at the lumbar level showing evidence of loosening around screw through the left pedicle of L3.
