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Comparison of short-segment monoaxial and polyaxial pedicle screw fixation comb...

Wang, Hongwei; Zhao, Yiwen; Mo, Zhongjun; Han, Jianda; Chen, Yu; Yu, Hailong; Wang, Qi; Liu, Jun; Li, Changqing; Zhou, Yue; Xiang, Liangbi

OBJECTIVES: No studies have compared monoaxial and polyaxial pedicle screws with regard to the von Mises stress of the instrumentation, intradiscal pressures of the adjacent segment and adjacent segment degeneration. METHODS: Short-segment monoaxial/polyaxial pedicle screw fixation techniques were compared using finite element methods, and the redistributed T11-L1 segment range of motion, largest maximal von Mi...

Date: 2017   |   Origin: Oasisbr

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