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Table 1 Preoperative parameters between the patients with CL and CK (n = 50)

From: Cervical kyphosis in patients with Lenke type 1 adolescent idiopathic scoliosis: the prediction of thoracic inlet angle

  CL (n = 16) CK (n = 34) P
Age 16.7 ± 5.6 14.5 ± 2.5 0.059
Sex / / 0.256
Males 5 5
Females 11 29
Risser 3.3 ± 2.1 2.9 ± 1.4 0.598
Cobb (°) 54.0 ± 11.9 50.4 ± 9.2 0.259
C2-7 angle (°)a −16.0 ± 10.4 12.9 ± 10.1 0.000
TIA (°)a 76.3 ± 14.2 63.0 ± 7.8 0.002
C2-7 SVA (cm) 1.5 ± 1.2 2.0 ± 0.7 0.136
T1 slope (°)a 21.3 ± 10.4 8.7 ± 6.9 0.000
PTK (°)a 13.1 ± 9.3 4.6 ± 8.1 0.002
TK (°)a 32.5 ± 20.8 20.77 ± 11.8 0.047
LL (°)a −62.4 ± 15.3 −49.0 ± 12.6 0.002
  1. Values indicate mean ± standard deviation unless otherwise specified
  2. CL cervical lordosis, CK cervical kyphosis, AIS adolescent idiopathic scoliosis, TIA thoracic inlet angle, SVA sagittal vertical axis, PTK proximal thoracic kyphosis, TK thoracic kyphosis, LL lumbar lordosis
  3. aSignificant difference