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Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: The influence of early thoracic fusion on the pulmonary function of patients with idiopathic scoliosis in the early period of the second growth peak with different Risser signs

Fig. 2

Measurements of the thoracic cage. a T1-T12 height. The straight line distance between the midpoint of the upper endplate at T1 and the midpoint of the lower endplate at T12. b Maximum inner chest diameter (MICD), the maximum linear distance between the medial margin of the ribs. c1, c2 Campbell’s space available for lung ratio (SAL), the ratio of the distance between the concave side (c1) and the convex side (c2) of the lateral curvature from the first costal apex to the highest point of the diaphragm. d Anterior and posterior thoracic diameter (APTD), the distance between anterior chest wall and the anterior border of the vertebral body through the highest point of the diaphragm on the sagittal plane. e Thoracic sagittal longitudinal diameter (TSLD), the distance between the highest point of the diaphragm and the highest point of the chest on the sagittal plane

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X