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- W2056592153 abstract "Abstract Background Internal fixation is one of the main options for treating displaced intracapsular hip fractures. However, controversy remains over which osteosynthesis is the best choice. Using a simulated displaced intracapsular hip fracture model, we compared the mechanical stability of three types of osteosynthesis: the sliding hip screw (SHS), three cannulated screws and the Targon ® FN. We also assessed whether bone mineral density (BMD) influenced the stability of the fixation. Methods Unstable/displaced intracapsular hip fractures were induced in a total of 12 pairs of fresh-frozen cadaver femora. Each fracture was fixed at random on the left or right side with an SHS or three cannulated screws (six bone pairs; study 1), or with an SHS or the Targon ® FN implant (six bone pairs; study 2). All femoral heads were exposed to cyclic combined axial and torque loads until failure. The failure mechanism, the maximal load-to-failure and the dual-energy X-ray absorptiometry (DEXA) values of the femoral heads were determined and their relationships were analysed. Results There was no significant difference in the maximal load-to-failure between the SHS and the three cannulated screws. The load-to-failure was significantly higher for the Targon ® FN than for the SHS. There was a high correlation between the bone mineral densities (BMDs) of the femoral heads and maximal load-to-failure in the Targon ® FN group only. Interpretation Basing the implant choice on preimplantation BMD measurements does not ensure the best biomechanical outcome. We found that the combination of a fixed-angle device and multiple sliding neck screws (Targon ® FN) enhances the mechanical strength of reconstructions in unstable/displaced intracapsular hip fractures." @default.
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- W2056592153 date "2011-02-01" @default.
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- W2056592153 title "Biomechanical analysis of the sliding hip screw, cannulated screws and Targon® FN in intracapsular hip fractures in cadaver femora" @default.
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- W2056592153 doi "https://doi.org/10.1016/j.injury.2010.08.021" @default.
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