六、综述
Mauricio J. Avila和Ali A. Baaj在检索大量文献后，找了7篇符合条件的文献（具体描述胸椎徒手椎弓根置钉技术，进钉点，轴向和矢状轨迹）
Table 1: Studies Describing Techniques for Freehand Placement of Thoracic Pedicle Screws
| Authors & Year | Patients | No. of Screws | Spine Pathology | Entry Point | Axial Trajectory | Sagittal Trajectory |
|---|---|---|---|---|---|---|
| Kim, et al. (2004) | 394 | 3204 | ||||
| Karapinar, et al. (2008) | ||||||
| Modi, et al. (2009) | ||||||
| Modi, et al. (2010) | ||||||
| Parker, et al. (2011) | ||||||
| Rivkin, et al. (2014) | ||||||
| Fennell, et al. (2014) | ||||||
| Total |