Research ArticleBiomechanics

The Impact of Adult Thoracolumbar Spinal Deformities on Standing to Sitting Regional and Segmental Reciprocal Alignment

KATHERINE E. PIERCE, SAMANTHA R. HORN, DEEPTEE JAIN, FRANK A. SEGRETO, COLE BORTZ, DENNIS VASQUEZ-MONTES, PETER L. ZHOU, JOHN MOON, LEAH STEINMETZ, CHRISTOPHER G. VARLOTTA, NICHOLAS J. FRANGELLA, NICHOLAS STEKAS, DAVID H. GE, AARON HOCKLEY, BASSEL G. DIEBO, SHALEEN VIRA, HADDY ALAS, AVERY E. BROWN, RENAUD LAFAGE, VIRGINIE LAFAGE, FRANK J. SCHWAB, HEIKO KOLLER, AARON J. BUCKLAND, MICHAEL C. GERLING and PETER G. PASSIAS
International Journal of Spine Surgery August 2019, 13 (4) 308-316; DOI: https://doi.org/10.14444/6042

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Figures

  • Figure 1
    Figure 1

    Standing and sitting lateral radiographs of a 60-year-old male characterized as an ASD patient by the SRS-Schwab modifier classification with a pelvic tilt (PT) grade of +, and pelvic incidence minus lumbar lordosis (PI-LL) and sagittal vertical axis (SVA) grades of ++ at baseline. The patient had positional alignment changes from standing to sitting of 14.888 for PT and 3.438 for PI-LL, and an SVA difference of −47.53 mm.

  • Figure 2
    Figure 2

    Standing and sitting lateral radiographs of a 50-year-old male (20.1 kg/m2) characterized as a nondeformity patient by the SRS-Schwab modifier classification with pelvic tilt (PT), pelvic incidence minus lumbar lordosis (PI-LL), and sagittal vertical axis (SVA) grade of 0, or nonpathologic at baseline. He had positional alignment changes of 52.76° for PT, 62.43° for PI-LL, and an SVA difference of 38.74 mm.

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The Impact of Adult Thoracolumbar Spinal Deformities on Standing to Sitting Regional and Segmental Reciprocal Alignment
KATHERINE E. PIERCE, SAMANTHA R. HORN, DEEPTEE JAIN, FRANK A. SEGRETO, COLE BORTZ, DENNIS VASQUEZ-MONTES, PETER L. ZHOU, JOHN MOON, LEAH STEINMETZ, CHRISTOPHER G. VARLOTTA, NICHOLAS J. FRANGELLA, NICHOLAS STEKAS, DAVID H. GE, AARON HOCKLEY, BASSEL G. DIEBO, SHALEEN VIRA, HADDY ALAS, AVERY E. BROWN, RENAUD LAFAGE, VIRGINIE LAFAGE, FRANK J. SCHWAB, HEIKO KOLLER, AARON J. BUCKLAND, MICHAEL C. GERLING, PETER G. PASSIAS
International Journal of Spine Surgery Aug 2019, 13 (4) 308-316; DOI: 10.14444/6042
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