Fig. 4
Case 7. A 15-year-old boy presented scoliosis combined with asymptomatic tethered cord. The pre-operative radiograph and CT (Fig. 2 a-d) shows scoliosis with a coronal Cobb angle of 66.0o. The AVT was 66 mm and the flexibility was 36.5%. The pre-operative MRI (Fig. 2 e) shows a tethered spinal cord and the conus medularis located at the L3 level. The final radiographs (Fig. 2 f, g) shows that the coronal Cobb angle is decreased to 23o. The VAT decreased to 10 mm and the correction rate was 62.9%. The post-operative MRI (Fig. 2 h) shows the conus medularis has no upward movement and is still located at the L3 level