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PC: primary component; CE: center-edge; SS: sacral slope; PT: pelvic tilt; PI: pelvic incidence; LLA: lumbar lordosis angle
| Variable | PC1 | PC2 |
| Capsule thickness | 0.276 | 0.784 |
| CE angle | 0.127 | 0.755 |
| Sharp angle | 0.184 | -0.884 |
| LLA | -0.710 | 0.069 |
| PI | -0.892 | 0.068 |
| SS | -0.910 | 0.130 |
| PT | -0.449 | -0.176 |
| Percentage％ | 35.10% | 28.89% |
| Cumulative％ | 35.10% | 63.99% |
