Table 1 Characteristics of patients with contained type and separate type

Gender, M/F, n

19/26

24/23

Age, years

45

42.1

Inclusion index

0.31 ± 0.14

–

Separation index

–

0.74 ± 0.71

Length index

0.80 ± 0.08

0.83 ± 0.17

Anterior index

0.49 ± 0.25

0.38 ± 0.20^c

Extra-anterior index

− 0.52 ± 0.59

− 0.56 ± 0.39

Posterior index

0.52 ± 0.27

0.69 ± 0.37^c

Extra-posterior index

–

− 0.80 ± 0.34