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Table 4 Comparison of the sagittal thoracic kyphotic of patients in different groups before, after the surgery and at the last follow-up

From: Clinical and radiological outcomes of the multilevel Ponte osteotomy with posterior selective segmental pedicle screw constructs to treat adolescent thoracic idiopathic scoliosis

Group/thoracic lordosis angle n Preoperative Postoperative Last follow-up Correction angle
Hyper group
A 3 45.3° ± 5.5° 27.0° ± 2.0° 25.7° ± 1.5° 18.3° ± 2.5°
B 4 43.0° ± 1.4° 30.5° ± 1.3° 30.3 ± 1.0° 12.5° ± 1.3°
t   1.740 − 2.842 − 4.927 4.063 s
P   0.098 0.036 0.004 0.010
Normal group
A 18 21.3° ± 6.7° 28.4° ± 4.6° 27.3° ± 4.4° − 7.1° ± 10.3°
B 19 23.7° ± 5.5° 24.4° ± 6.2° 23.6° ± 6.3° − 0.7° ± 4.6°
t   − 1.163 2.246 2.089 − 2.413
P   0.253 0.031 0.044 0.024
Hypo group
A 11 7.3° ± 1.9° 18.4° ± 3.2° 17.5° ± 3.2° − 11.1° ± 2.9°
B 11 8.0° ± 1.4° 11.5° ± 2.4° 10.9° ± 2.5° − 3.5° ± 2.2°
t   − 1.000 5.706 5.302 − 6.877
P   0.329 0.000 0.000 0.000