Compared with patients in the compensated group, patients in the decompensated group were older (62.9 vs.
A total of 125 patients (27 compensated and 98 decompensated) met inclusion criteria. Percentages of patients achieving minimal clinically important difference (MCID) were also assessed. Baseline and 1-year follow-up radiographic and health-related quality of life (HRQOL) outcomes included Oswestry Disability Index, Short Form-36 scores, and Scoliosis Research Society-22 scores. Patients with SSM were divided into 2 groups: those with compensated SSM (SVA 10°) and those with decompensated SSM (SVA ≥ 5 cm). Inclusion criteria included age older than 18 years, presence of adult spinal deformity with SSM, plan for surgical treatment, and minimum 1-year follow-up data. The study was a multicenter, prospective analysis of adults with spinal deformity who consecutively underwent surgical treatment for SSM. The authors' objective was to compare baseline disability and treatment outcomes for patients with compensated (SVA 10°) and decompensated (SVA > 5 cm) SSM. Few data exist for SSM patients with flatback deformity and normal SVA. A subset of patients with sagittal spinopelvic malalignment (SSM) have flatback deformity (pelvic incidence-lumbar lordosis mismatch > 10°) but remain sagittally compensated with normal SVA. Increased sagittal vertical axis (SVA) correlates strongly with pain and disability for adults with spinal deformity. Smith, Justin S Singh, Manish Klineberg, Eric Shaffrey, Christopher I Lafage, Virginie Schwab, Frank J Protopsaltis, Themistocles Ibrahimi, David Scheer, Justin K Mundis, Gregory Gupta, Munish C Hostin, Richard Deviren, Vedat Kebaish, Khaled Hart, Robert Burton, Douglas C Bess, Shay Ames, Christopher P Surgical treatment of pathological loss of lumbar lordosis (flatback) in patients with normal sagittal vertical axis achieves similar clinical improvement as surgical treatment of elevated sagittal vertical axis: clinical article.
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