One year after PVCR, Pearson correlation analysis showed that serum levels of BMP2 and BMP9 in patients with scoliosis were positively correlated with ODI scores (r = 0.778, P < 0.001; r = 0.746, P < 0.001), as shown in Figures 1 and 2. This evidence concerns the gene GDF2 and scoliosis.