Table 3 The results of the comparison between males and matched females

Preoperative

Primary curve (°)

71.4 ± 21.3*

70.2 ± 18.5

0.79 (NS)

Flexibility (%)

30.1 ± 13.5

38.1 ± 17.5

0.027

Postoperative

Primary curve (°)

35.3 ± 16.3

31.6 ± 18.8

0.35 (NS)

Correction (%)

51.3 ± 12.9

57.1 ± 18.2

0.11 (NS)

Final visit

Primary curve (°)

37.6 ± 16.3

34.4 ± 18.9

0.35 (NS)

Loss of correction (°)

2.3 ± 1.9

2.8 ± 2.2

0.25 (NS)