Decompensated imbalanced patient: PI of 46° and LL of 22° with severe alteration between them (46–22° = 24°) and an elevated SVA and TPA (130 mm and 27°, respectively) when reaching the physiological limits of pelvic retroversion (PT: 19°) and sacral verticalization (SS: 27°) for his PI (46° = 19° + 27°).Note. PI, pelvic incidence; LL, lumbar lordosis; TPA, T1-pelvic angle; SVA, sacral vertical axis; PT, pelvic tilt; SS, sacral slope.