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(A) Lateral standing and (B) flexed-seated spinopelvic radiographs of a patient with an L4-L5 spinal arthrodesis and an uncemented THA. Pelvic incidence, 53°; sacral slope (SS), standing, 33°; SS seated, 61°; AI of cup standing, 17°; AI seated, -16°; pelvic femoral angle (PFA) standing, 196°; PFA seated, 80°.
