Table 2 Sagittal diameters of the spinal cord (unit: mm)

6.50 ± 0.03

6.54 ± 0.04

6.47 ± 0.05

6.26 ± 0.05

6.03 ± 0.04

6.03 ± 0.03

6.24 ± 0.11

6.65 ± 0.18

6.60 ± 0.21

6.09 ± 0.13

6.36 ± 0.16

5.96 ± 0.07

5.95 ± 0.05

6.01 ± 0.14

7.16 ± 0.38

6.63 ± 0.21

6.62 ± 0.05

6.46 ± 0.12

6.20 ± 0.12

6.27 ± 0.11

6.36 ± 0.05

6.78 ± 0.09

6.65 ± 0.25

6.23 ± 0.04

6.38 ± 0.09

6.10 ± 0.1

6.00 ± 0.1

6.10 ± 0.06