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20 December 2016 : Laboratory Research  

Digital Anatomical Measurement for Anterolateral Fixation of Middle and Lower Thoracic Vertebrae

Xiaohe Li1AB, He En1DE, Yunfeng Zhang2B, Shang Gao1EF, Guimin Li3E, Yu Guo3B, Xin Wang1E, Haiyan Wang1C, Yongqiang Cai1F, Zhiqiang Wang1B, Zhijun Li1AB*, Cunbao Li4CG, Feifei Zhao5E

DOI: 10.12659/MSM.899062

Med Sci Monit 2016; 22:5021-5027

Abstract

BACKGROUND: The key to its successful application is to determine the best entry point for the vertebral screw(s). This study aimed to provide a reference for clinical anterolateral fixation through digital measurement of computed tomography (CT) data to identify relevant anatomical positions in the middle and lower thoracic vertebrae (T4–T12) of 30 adults.

MATERIAL AND METHODS: We performed digital measurement of anatomical positions in the middle and lower thoracic vertebrae (T4–T12) of 30 adults. Abbreviations: Left height of vertebral body, LHV; Right height of vertebral body, RHV; Anterior height of vertebral body, AHV; Middle height of vertebral body, MHV; Posterior height of vertebral body, PHV; Superior sagittal diameter of vertebral body, SSDV; Superior transverse diameter of vertebral body, STDV; inferior sagittal diameter of vertebral body, ISDV; Inferior transverse diameter of vertebral body, ITDV; (1) Left (right) height of vertebral body, [L(R)HV]; Anterior (middle, posterior) height of vertebral body [A(M,P)HV]; Superior (inferior) sagittal diameter of vertebral body, [S(I)SDV]; Superior (inferior) transverse diameter of vertebral body, [S(I)TDV].

RESULTS: The transverse diameters of vertebral bodies were always larger than the sagittal diameter for 3~4 mm. The distance between 2 vertebrae (interval of 1 vertebra) range were (52–56) mm for T4–T7 and (44–48) mm for T8–T12, and the surgeons could collate these data to choose a suitable stick length.

CONCLUSIONS: Bone graft should prune into laterigrade cuboid, it can recover A-P and bilateral physiological functions load, and the height of the vertebral body increased from T4 to T12.

Keywords: Anatomy, Computers, Screw Fixation Techniques, Thoracic Vertebrae

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750