Table 1 The mean CT values within the ROI of both trajectories between L4 and L5 vertebral bodies was compared in male and female subjects at the same age
Age group | Traditional pedicle trajectory | Cortical bone trajectory | Modified cortical bone trajectory | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Male | Female | Male | Female | Male | Female | |||||||
L4 | L5 | L4 | L5 | L4 | L5 | L4 | L5 | L4 | L5 | L4 | L5 | |
21–30 | 258.8 ± 53.95 | 235.2 ± 64.2 | 339.3 ± 68.3 | 298.3 ± 67.7 | 447.3 ± 108.4 | 430.5 ± 96.7 | 535.4 ± 109.3 | 505.4 ± 104.8 | 511.0 ± 92.9 | 493.1 ± 116.1 | 612.7 ± 100.8 | 591.7 ± 122.9 |
31–40 | 228.8 ± 48.3 | 204.4 ± 42.1 | 278.4 ± 74.9 | 257.9 ± 61.4 | 438.8 ± 112.6 | 422.0 ± 104.1 | 492.1 ± 129.9 | 496.1 ± 112.2 | 501.9 ± 113.6 | 465.6 ± 101.7 | 576.7 ± 133.1 | 569.7 ± 107.7 |