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Panoramic radiograph of a female volunteer illustrating the spinopelvic parameter measurements. The following parameters were measured: CPA, C2 pelvic angle; T1S1 length and L1S1 length; SSA, spinosacral angle; SVA, sagittal vertical axis; SS, sacral slope; PT, pelvic tilt; PI, pelvic incidence; LL, lumbar lordosis; TK, thoracic kyphosis; TL, thoracolumbar alignment.
