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The radiographs show how measurements were performed for (A) SC-S distance and T-S distance; (B) LCE angle; (C) acetabular inclination; and (D) crossover sign and crossover percentage. The percentage of crossover is measured as A/(A + B). SC-S = sacrococcygeal to symphysis; T-S = coccyx tip to symphysis; LCE = lateral center edge.
