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Pelvic radiograph shows the iliopectineal line (thick black dashed line); ilioischial line (thick white dashed line); sacral arcuate lines (three thick black curves); Shenton arc (arrowheads); line of Klein (thin straight white line); gluteal fat stripe (white asterisks); acetabular roof (thin white curve); medial acetabular wall (black asterisks); anterior acetabular wall (black dots); posterior acetabular wall (white dots); and femoral head line (thin black curve).
