Table 2.
A comparison of clinical characteristics stratified by surgery among patients
| Characteristics | Surgery | p | |
|---|---|---|---|
| No | Yes | ||
| n | 269 | 112 | |
| Sex (%) | 0.909 | ||
| Female | 76 (28.3) | 33 (29.5) | |
| Male | 193 (71.7) | 79 (70.5) | |
| Age (years, mean (SD)) | 68.70 (6.25) | 69.41 (5.39) | 0.295 |
| PT (°, mean (SD)) | 16.61 (10.62) | 21.86 (9.32) | < 0.001 |
| Sacral slope (°, mean (SD)) | 30.80 (12.50) | 29.02 (10.66) | 0.189 |
| Thoracic kyphosis (°, mean (SD)) | 25.59 (22.88) | 21.93 (12.98) | 0.113 |
| PI (°, mean (SD)) | 47.40 (11.89) | 50.96 (11.34) | 0.007 |
| LL (°, mean (SD)) | 40.05 (20.02) | 36.79 (18.85) | 0.142 |
| PI-LL (°, mean (SD)) | 7.35 (18.44) | 14.17 (16.64) | 0.001 |
| Lower lumbar lordosis (°, mean (SD)) | 32.12 (11.99) | 29.55 (10.32) | 0.048 |
| Lordosis distribution index (mean (SD)) | 1.17 (3.27) | 2.36 (13.69) | 0.181 |
| Chin-brow vertical angle (°, mean (SD)) | -1.78 (7.36) | -1.76 (8.11) | 0.981 |
| T1 pelvic angle (°, mean (SD)) | 14.62 (11.58) | 19.25 (10.27) | < 0.001 |
| SVA (mm, mean (SD)) | 29.69 (48.67) | 33.33 (42.09) | 0.489 |
| CrSVA-H (mm, mean (SD)) | 4.79 (52.14) | -4.06 (46.63) | 0.120 |
| Global tilt (°, mean (SD)) | 19.03 (14.12) | 24.46 (12.48) | < 0.001 |
| Pelvic shift (mm, mean (SD)) | 26.35 (34.21) | 34.74 (30.54) | 0.025 |
| Knee flexion angle (°, mean (SD)) | 9.98 (8.18) | 10.79 (7.71) | 0.370 |
| Femoral obliquity angle (°, mean (SD)) | 2.93 (5.16) | 3.59 (4.21) | 0.225 |
| Coronal T1 pelvic tilt angle (°, mean (SD)) | 1.68 (1.67) | 1.76 (1.84) | 0.683 |
| Cobb angle (°, mean (SD)) | 13.57 (11.71) | 12.63 (10.45) | 0.464 |
| C7-CSVL (mm, mean (SD)) | 11.79 (11.31) | 13.94 (11.05) | 0.089 |
| Hip-knee ankle angle (°, mean (SD)) | 3.58 (4.65) | 3.40 (3.81) | 0.717 |
SD, Standard Deviation; PT, Pelvic Tilt; PI, Pelvic Incidence; LL, Lumbar Lordosis; SVA, Sagittal Vertical Axis; CrSVA-H, The distance from the Cranial Sagittal Vertical Axis (CrSVA) to the center of the Hip; C7-CSVL, The alignment of the C7 plumb line in relation to the Center Sacral Vertical Line (CSVL)