Table 1 Detected neuroaxial abnormalities in patients with AIS

Thoracic syringomyelia

8

5.5

Cervical syringomyelia

2

1.4

Arnold Chiari type I + cervical s syringomyelia

2

1.4

Isolated Arnold Chiari type I

1

0.7

Mild tonsillar herniation

2

1.4

Tetherd cord

1

0.7

Total

17

11.9