Anatomical considerations for cervical pedicle screw insertion: the use of multiplanar computerized tomography reconstruction measurements

• DOI: 10.3171/spi.2006.4.6.472
• Publication Date: 2008-01-24T13:12:35Z
• Authors: Masaaki Chazono; Shigeru Soshi; Takeshi Inoue; Yoshikuni Kida; Chikara Ushiku
• Keywords: Foramen; Transverse diameter

The purpose of this study was to evaluate the linear and angular parameters vertebral body (VB) required for cervical pedicle screw (CPS) insertion by using multiplanar computerized tomography (CT) reconstructions.Three hundred fifteen vertebrae from C-3 C-7 in 63 patients were studied. Pedicle dimensions such as transverse angle (PTA), sagittal (PSA), outer width (POW) measured on axial CT reconstructions, including lateral mass thickness (LMT), anteroposterior (AP) mediolateral distances between spinal canal foramen, longitudinal diameter. In addition, correlations PTA other calculated univariate regression analysis. overall mean LMT ranged 10.7 12.6 mm. smallest AP canal-transverse foramen distance found at (1.1 mm),whereas largest C-4 (3.1 mm). (1.2 mm), whereas (4.7 There significant intergroup differences male female except had a direct correlation with distances. Pearson coefficient 0.71 inverse one -0.73 distance.Analysis data obtained suggests that not only but also VB can be useful when inserting CPS.