Figure 2

A 17-year-old female, PUMC Ic type. Preoperative X-ray showed a 52° left lumbar curve with the apex at L_1,2 disc(A, B). The interspace angle between L₃ and L₄ was -5°. On the right Bending film, the interspace angle was 0°(C). On the left Bending film, it was still -5°(D), and T₁₂-L₁and L_2,3 disc didn't open, so the fusion should include T₁₂ to L₃. Postoperative films showed a good correction and the interspace angle improved to 0° (E, F). Nine months later, there were some loss of the correction and the interspace angle increased to 7° (G, H).