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Abstract
Objectives
To analyze and compare the cervical and thoracic sagittal curves between normal adolescents and patients with thoracic adolescent idiopathic scoliosis (AIS).
Summary of Literature Review
There are no reports on cervical sagittal curves and its correlation with thoracic sagittal curves in AIS.
Materials and Methods
The sagittal curves were analyzed in normal adolescents (N-adol group, n=23) and patients with thoracic AIS (AIS group, n=26) who had thoracic curves ≥ 45°. Lateral standing radiographs of the cervical spine with a elbow straight and the whole spine with the hands on the clavicles were taken. The sagittal curves and balance were measured in the following segments; C2-C7, T2-T5, T5-12, T2-12, T12-S1. Cervical lordosis (C2-C7) was measured in both cervical spine radiographs and whole spine radiographs.
Results
In the N-adol group, the cervical lordosis was 9.2±14.6°in the cervical spine radiographs and -0.6±12.9°(‘-’ means kyphosis) in whole spine radiographs. In the AIS group, cervical lordosis was -5.0±12.9°in the cervical radiographs and -8.1± 12.7° in the whole radiographs. The AIS group had significantly less cervical lordosis than the N-adol group. Thoracic kyphosis of T5-12 and T2-12 was 24.1±10.6°and 38.9±13.1°in the N-adol group, respectively, and 17.8±9.4°and 30.1±11.8°in the AIS group, respectively. There was a significant difference between the two groups (Ps<0.05). There was no significant difference in thoracic kyphosis of T2-T5, lumbar lordosis and sagittal balance between the two groups (Ps>0.05). In the AIS group, the cervical lordosis measured in the cervical spine radiograph showed a positive correlation with thoracic kyphosis of T2-5 (r=0.50, P=0.009) and T2-12 (r=0.57, P=0.003).
REFERENCES
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Figures and Tables%
Fig. 1.
In the normal adolescent group, cervical lordosis of C2-7 measured in cervical spine radiographs had a positive correlation with kyphosis of T2-5 (A) and T2-12 (B).
Fig. 2.
In the AIS group, cervical lordosis of C2-7 measured in cervical spine radiographs had a positive correlation with kyphosis of T2-5 (A) and T2-12 (B).
Table 1.
Parameters measured in radiographs
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