Analysis of an unexplored group of sagittal deformity patients: low pelvic tilt despite positive sagittal malalignment

Emmanuelle Ferrero, Shaleen Vira, Christopher P. Ames, Khaled Kebaish, Ibrahim Obeid, Michael F. O’Brien, Munish C. Gupta, Oheneba Boachie-Adjei, Justin S. Smith, Gregory M. Mundis, Vincent Challier, Themistocles S. Protopsaltis, Frank J. Schwab, Virginie Lafage, Spine Study Group International Spine Study Group