Proximal Junction Kyphosis in Adult Scoliosis: Best Postoperative Radiological Predictors—A Retrospective Cohort Study

Figure 1

Compound bar charts (a–d) show the occurrences of PJK as predicted by each formula. LL = lumbar lordosis, TK = thoracic kyphosis, GSA = global sagittal alignment, and PJK = proximal junctional kyphosis. The blue bar shows the number of patients who developed PJK, while the green bar shows the number of patients who did not develop PJK.

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