Table 2 Pedicle screw placement accuracy among three insertion techniques
Screw position, n (%) | RA | FP | FH | P valuea | ||
|---|---|---|---|---|---|---|
RA vs FP | RA vs FH | FP vs FH | ||||
A | 149 (94.3) | 61 (78.2) | 180 (88.7) |  < 0.001 | 0.062 | 0.025 |
B | 5 (3.2) | 12 (15.4) | 17 (8.4) | 0.001 | 0.040 | 0.084 |
A + B | 154 (97.5) | 73 (93.6) | 197 (97.0) | 0.270 | 1.000 | 0.068 |
C | 2 (1.3) | 5 (6.4) | 3 (1.5) | 0.075 | 1.000 | 0.082 |
D | 1 (0.6) | 0 (0) | 2 (1.0) | 1.000 | 1.000 | 1.000 |
E | 1 (0.6) | 0 (0) | 1 (0.5) | 1.000 | 1.000 | 1.000 |
Total | 158 (100) | 82 (100) | 203 (100) | Â | Â | Â |