Could CCI or FBCI Fully Eliminate the Impact of Curve Flexibility When Evaluating the Surgery Outcome for Thoracic Curve Idiopathic Scoliosis Patient? A Retrospective Study
Fig 2
Correlation analysis between BFR (bending flexibility rate), FFR (fulcrum flexibility rate), CCI(correction index), fulcrum bending correction index (FBCI) modified FBCI (M-FBCI), modified CCI (M-CCI).
A: CCI showed significant negative correlation with BFR(r = -0.856, P<0.01). B: FBCI showed significant negative correlation with FFR(r = -0.728, P<0.01). Figs 2A,2B show that both CCI and FBCI could not fully eliminate the influence of BFR and FFR. Means that the preoperative curve flexibility will still affect when using CCI or FBCI to compare the curve corrective ability of different apparatus. C: M- CCI showed no significant correlation with BFR(r = 0.123, P = 0.349). D: M-FBCI showed no significant correlation with FFR(r = -0.008, P = 0.950). Figs 2C,2D show that M-CCI and M-FBCI do not have significant correlation with preoperative curve flexibility. Means that the influence of curve flexibility could be eliminated when use these to compare the curve corrective ability of different apparatus.