Table 4 The existing C7 pedicle screw trajectories in literature
Study | Year | Sample size | Transverse angle | Sagittal angle |
|---|---|---|---|---|
By Raj D. Rao, et al. | 2008 | 98 | 33.5 ± 5.6° | -2.8 ± 3.8° |
Xiujun Zheng, et al. | 2009 | 6 | 34.0 ± 4.0° | - |
Dong Ho Lee, et al. | 2010 | 40 | 28.0 ± 4.6° | -2.0 ± 5.4° |
Shaunak Desai, et al. | 2010 | 10 | 27.1 ± 0.9° | - |
Woo Young Jang, et al. | 2011 | 120 | 35.1 ± 8.1° | - |
Wensheng Liao, et al. | 2015 | 6 | 41.1 ± 1.9° | - |
Michael Siu Hei Tse, et al. | 2016 | 94 | 29.4 ± 3.6° | - |
Jarupon Mahiphot, et al. | 2019 | 130 | 39.4 ± 5.0° | -5.6 ± 4.3° |
Manuel Moser, et al. | 2019 | 4 | 33.4 ± 2.3° | - |