| Normal Group ∆PT ≥ 10 (n = 84) | Stiffness group 0° ≤ ∆PT < 10° (n = 35) | Paradoxical group ∆PT < 0° (n = 5) | p-value | |||
---|---|---|---|---|---|---|---|
Sex | Â | Â | Â | Â | Â | Â | 0.643 |
Female | 50 | (60%) | 22 | (63%) | 4 | (80%) | Â |
Male | 34 | (40%) | 13 | (37%) | 1 | (20%) | Â |
Age (year) | 62 | ±15 | 69 | ±8 | 76 | ±15 | 0.076 |
Dislocation | 0 | (0%) | 3 | (9%) | 2 | (40%) a | < 0.001** |
Spinal fusion | 11 | (13%) | 14 | (40%) a | 3 | (60%) | 0.001** |
Standing | |||||||
SVA (cm) | 3.8 | ±4.5 | 4.3 | ±2.9 | −1.0 | ±5.1 | 0.066 |
TK | 25 | ±13 | 26 | ±10 | 25 | ±9 | 0.847 |
LL | 47 | ±15 | 40 | ±15 | 50 | ±11 | 0.070 |
SS | 35 | ±10 | 30 | ±10 | 33 | ±10 | 0.068 |
PT | 13 | ±11 | 19 | ±9 a | 18 | ±8 | < 0.001** |
PI | 48 | ±11 | 49 | ±10 | 51 | ±15 | 0.438 |
PI-LL | 1 | ±15 | 9 | ±12 a | 1 | ±11 | 0.007** |
PFA | 184 | ±10 | 191 | ±11 a | 192 | ±9 | 0.004** |
Cup anteversion | 17 | ±9 | 19 | ±10 | 19 | ±4 | 0.734 |
Cup inclination | 43 | ±7 | 45 | ±6 | 42 | ±4 | 0.476 |
Sitting | |||||||
SVA (cm) | 6.0 | ±2.8 | 5.5 | ±2.6 | 5.2 | ±3.5 | 0.721 |
TK | 25 | ±14 | 27 | ±10 | 27 | ±11 | 0.189 |
LL | 22 | ±14 | 33 | ±13 a | 43 | ±6 a | < 0.001** |
SS | 15 | ±11 | 24 | ±10 a | 35 | ±10 a | < 0.001** |
PT | 33 | ±12 | 25 | ±9 a | 15 | ±8 a | < 0.001** |
PFA | 133 | ±16 | 125 | ±12 a | 114 | ±9 a | 0.003** |