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Evidence of screw loosening and proximal junctional kyphosis. CT of a 16 years old girl following segmental pedicle screw fixation T2-T12. Sagittal images (A) six weeks, and (B) two years following surgery of the same patient in Figure 2. Beside evidence of loosening, image B shows occurrence of proximal junctional kyphosis above the upper limit of the implant compared with image A.
