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- W2385155668 abstract "Objective To evaluate the effect of bone cement augmentation technique on fixation strength of pedicle screw during trajectory expansion,to provide the basis of reliable remedial technique selection for revision of internal lumbar fixation.Methods A total of 40 lumbar vertebrae and 80 pedicles were obtained to stimulate the trajectory of pedicle needing revision after internal lumbar fixation surgery.40 lumbar vertebrae were randomly divided into Group A and Group B,with 20 simple fixed sides and 20 augmented fixed sides in each group.In Group A,pedicles on both sides of all the specimens were determined for the maximum axial pullout of strength;while in Group B,pedicles on both sides of all the specimens were detected for the maximum rotary torque,and differences between the two sides were compared.Results(1) There was significant difference between the two fixations,indicating a weak correlation.Conclusion(1)It was confirmed that in revision of internal lumbar fixation,bone cement augmentation on pedicle screw can effectively improve the strength of pedicle screw.(2)Maximum axial pullout of strength and maximum rotary torque in reinforced group were weakly correlated with those in the control group,suggesting the bone quality of the trajectory had limited influence on the strength of reinforced pedicle screw fixation." @default.
- W2385155668 created "2016-06-24" @default.
- W2385155668 creator A5032071046 @default.
- W2385155668 date "2014-01-01" @default.
- W2385155668 modified "2023-09-26" @default.
- W2385155668 title "Mechanics research of bone cement augmentation on pedicle screw in revision of internal lumbar fixation" @default.
- W2385155668 hasPublicationYear "2014" @default.
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