Table 2. Description of Spinopelvic Parameters in Standing and Sitting Positions.
| Parameter | Standing | Sitting | Change from a standing to a seated position | P-value | |
|---|---|---|---|---|---|
| LL, No. | 51 | 27 | 27 | ||
| Mean±SD (°) | 59.1±10.9 | 38.4±13.9 | 20.9±11.2 | <0.001 | |
| SS, No. | 52 | 52 | 52 | <0.001 | |
| Mean±SD (°) | 38.4±8.7 | 24.1±11.2 | 14.2±8.6 | ||
| SPT, No. | 50 | 52 | 50 | ||
| Mean±SD (°) | 11.6±6.6 | 26.9±10.2 | 15.5±9.0 | <0.001 | |
| PI, No. | 50 | 52 | 50 | ||
| Mean±SD (°) | 50.3±10.1 | 51.1±11.3 | –1.3±5.5 | 0.093 | |
| PFA, No. | 14 | 52 | 14 | ||
| Mean±SD (°) | 183.5±12.6 | 113.6±12.8 | 70.7±9.5 | <0.001 | |
No.: number of cases with non-missing values, LL: lumbar lordosis, SS: sacral slope, SPT: spinopelvic tilt, PI: pelvic incidence, PFA: pelvic femoral angle, SD: standard deviation.