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. 2022 Jun 29;16(3):450–457. doi: 10.14444/8260

Table 5.

Percentages of patients within each age cohort and overall who matched age-adjusted ideals (MATCH), those that undercorrected (UNDER) and those that overcorrected (OVER), based upon a ±10-y interval of age-adjusted values calculated with Renaud et al’s established formulas.Differences in lower extremity compensatory mechanisms (SFA, KA, AA, PS, GSA) by age group.

Age Adjustment Ideals UNDER Under Overall MATCH Match Overall OVER Over Overall
Pelvic tilt (°)
 <40 y 0% 24.40% 28.6% 24.40% 71.4% 51.10%
 40–65 y 19.4% 27% 53.2%
 ≥65 y 47.6% 14.3% 38.1%
Mismatch between pelvic tilt-lumbar lordosis (°)
 <40 y 25% 23.00% 0% 27.60% 75% 49.40%
 40–65 y 22.6% 27.4% 50%
 ≥65 y 23.8% 33.3% 42.9%
Sagittal vertical axis (mm)
 <40 y 42.9% 18.80% 57.1% 40.00% 0% 41.30%
 40–65 y 18.5% 40.7% 40.7%
 ≥65 y 10.5% 31.6% 57.9%
Mismatch between lumbar lordosis and thoracic kyphosis (°)
 <40 y 85.7% 42.90% 14.3% 18.70% 0% 38.50%
 40–65 y 46.0% 25.4% 28.6%
 ≥65 y 19% 0% 81%