Table 2 Results comparison between the two groups
Characteristics | Robot group | Conventional group | t/X2 | P value |
|---|---|---|---|---|
Operation time of the posterior pelvic ring (min), M±SD | 94.6±21.8 | 112.7±18.6 | t=-2.347 | 0.027 |
The amount of surgical bleeding (mm) | 98.2±36.1 | 286.8±92.7 | t=-6.408 | <0.001 |
Intraoperative fluoroscopy times, M±SD | 24.1±6.3 | 34.1±8.4 | t=-3.386 | 0.002 |
Maximum residual displacement | X2=1.056 | 0.543 | ||
Excellent (0-5 mm) | 9(81.8%) | 16(82.4%) | ||
Good (6-10 mm) | 2(18.2%) | 1(17.6%) | ||
Gras criterion on evaluation of sacroiliac screw position, n(%) | X2=1.638 | 0.355 | ||
Grade I | 10(90.9%) | 12(70.6%) | ||
Grade II and III | 1(9.1%) | 5(29.4%) | ||
Hospital stay(day) | 14.2±5.4 | 21.0±8.4 | t=-2.133 | 0.044 |
Healing time of sacral fractures (month) | 3.7±1.5 | 4.9±1.2 | t=-2.173 | 0.041 |
Majeed score | 90.7±5.6 | 85.5±5.6 | t=2.199 | 0.039 |