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- W3141807983 abstract "Objective To compare the biomechanical properties of the anterior transpedicular screwartii cial vertebral body(AVB) and conventional anterior screw plate system(AP) in lower cervical spine by i nite element study. Methods CT images(C1-T1) were obtained from a 38-year-old female volunteer. The models of intact C3-7(intact group), AP fixation(AP group), and AVB fixation(AVB group) were established and analyzed by Mimics 14.0, Geomagic Studio 2013, and ANSYS 14.0 softwares. The axial force of 74 N and moment couple of 1 N·m were loaded on the upper surface and upper facet joint surfaces of C3.?Under conditions of l exion, extension, lateral bending, and rotation, the Von Mises stress distribution regularity and maximum equivalent stree of AP and AVB groups were recorded, and the range of motion(ROM) was also analyzed of 3 groups. Results The intact model of lower cervical spine(C3-7) was established, consisting of 286?382 elements and 414 522 nodes, and it was successfully validated with the previously reported cadaveric experimental data of Panjabi and Kallemeyn. The stress concentrated on the connection between plate and screw in AP group, while it distributed evenly in AVB group. Between AP and AVB groups, there was signii cant dif erence in maximum equivalent stress values under conditions of 74 N axial force, l exion, extension, and rotation. AVB group had smaller ROM of i xed segments and larger ROM of adjacent segments than AP group. Compared with intact group, whole ROM of the lower cervical spine decreased about 3°, but ROM of C3, 4 and C6, 7 segments increased nearly 5° in both AP and AVB groups. Conclusion As a new reconstruction method of lower cervical spine, AVB i xation provides better stability and lower risk of failure than AP i xation." @default.
- W3141807983 created "2021-04-13" @default.
- W3141807983 creator A5056817495 @default.
- W3141807983 date "2013-01-01" @default.
- W3141807983 modified "2023-09-26" @default.
- W3141807983 title "FINITE ELEMENT STUDY ON ANTERIOR TRANSPEDICULAR SCREW-ARTIFICIAL VERTEBRAL BODY FIXATION IN LOWER CERVICAL SPINE" @default.
- W3141807983 hasPublicationYear "2013" @default.
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