From: A novel biplanar positioning technique to guide iliosacral screw insertion: a retrospective study
 | Biplanar group (n = 22) | Ti-Robot group (n = 21) | Traditional group (n = 21) | P value |
---|---|---|---|---|
Sex (Male/Female) | 13/9 | 11/10 | 13/8 | 0.813 |
Age (years) | 39.86 ± 16.07 | 47.76 ± 17.03 | 48.05 ± 13.78 | 0.159 |
Tile classification | Â | Â | Â | 0.713 |
 Type B | 12 | 13 | 14 |  |
 Type C | 10 | 8 | 7 |  |
Injury mechanism | Â | Â | Â | 0.956 |
 Fall | 7 | 6 | 8 |  |
 Motor | 11 | 10 | 10 |  |
 Crush | 4 | 5 | 3 |  |
Number of screws | Â | Â | Â | 0.535 |
 S1 | 18 | 19 | 20 |  |
 S2 | 16 | 17 | 13 |  |
Operation time (min) |  |  |  |  < 0.001 |
 S1 | 25.33 ± 6.66 | 15.74 ± 4.48 | 75.25 ± 11.53 |  |
 S2 | 27.44 ± 5.93 | 15.88 ± 3.26 | 85.38 ± 7.94 |  |
 Average | 26.32 ± 6.32 | 15.81 ± 3.9 | 79.24 ± 11.31 |  |
Radiation exposure (cGy/cm2) |  |  |  |  < 0.001 |
 S1 | 743.92 ± 209.34 | 684.92 ± 136.44 | 1933.14 ± 514.24 |  |
 S2 | 736.72 ± 162.31 | 676.74 ± 106.66 | 2190.65 ± 435.82 |  |
 Average | 740.53 ± 185.91 | 681.06 ± 121.62 | 2034.58 ± 494.54 |  |
Intra-operative bleeding (mL) |  |  |  |  < 0.001 |
 S1 | 12.22 ± 3.14 | 13.16 ± 4.5 | 28.8 ± 7.61 |  |
 S2 | 13.38 ± 4.4 | 10.53 ± 4.6 | 31.08 ± 8.71 |  |
 Average | 12.76 ± 3.77 | 11.92 ± 4.67 | 29.7 ± 8.01 |  |