Sagittal Spinal and Pelvic Parameters in Patients With Scheuermann's Disease: A Preliminary Study

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Figure 1
Measurements of spinal parameters in the sagittal plane: (1) thoracic kyphosis (TK) (superior endplate of T3–midbody of T10, angle = TK); (2) thoracolumbar kyphosis (midbody of T10–midbody of L2); (3) lumbar lordosis (LL) (midbody of L2–superior endplate of S1, angle = LL).
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Figure 2
Measurements of pelvic parameters in the sagittal plane: (1) pelvic incidence (PI); (2) pelvic tilt (PT); (3) sacral slope (SS).
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Figure 3
To avoid angle overlap, measurements were made using the average between the endplates for intercalary vertebrae such as T10 and L2.
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Figure 4
Graphical representation of the relationship between Δ (°) and T1 pelvic angle (TPA) (°) plotted with regression line given by equation y = 1.6073x − 14.25 (R² = 0.7558).
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Figure 5
Graphical representation of the relationship between Δ (°) and pelvic tilt (PT) (°) plotted with regression line given by equation y = 1.328x − 18.311 (R² = 0.67217).