Fig. 2

A patient with RCS accompanied by SCM. a-b Preoperative radiographs show that coronal Cobb angle was 62°.c-d Preoperative bending radiograph of the convex side shows that Cobb angle was 45.6° and flexibility was 26.45%.e Preoperative CT indicates mixed defects including failure of segmentation and formation. f-g Preoperative MRI indicates SCM type 2. h After heavy halo-femoral traction, the coronal Cobb angle was reduced to 38.2°.i-j After posterior-only surgical correction, postoperative radiographs show that coronal Cobb angle was 21.4°, and correction rate was 65.48%. k-l postoperative radiographs at 36 months after surgery show that coronal Cobb angle was 22.4°, and no signs of neurological impairment were found at the final follow-up stage