Validity and Reproducibility of the Measurements Obtained Using the Flexicurve Instrument to Evaluate the Angles of Thoracic and Lumbar Curvatures of the Spine in the Sagittal Plane

Figure 6

The distribution of the flexicurve angle in relation to the Cobb angle. The vertical and horizontal dotted lines represent the distribution of a normal curvature [31] and divide the figure in 9 zones. The same results are obtained with both techniques in the “A” zones, false positives should appear in “B” zones; false negatives should appear in the “C” zones.