24 human cadaver tibias were studied on varies parameters (index of cortical bone, bone density, histomorphometric measurement of bone sections). These characters were compared with the biomechanical results, which were gathered by testing the tibias in 3 groups. With using a new developed bone-nail-system we examined simply and double interlocked bones under axial loading by 5000 N. The position of the interlocking screws placed in the bone has a significant influence on the maximal received stress and deformation pattern of the bone stock. In case of proximal bone compression, the nail should be interlocked by one screw placed in the distal examined even. The applied load is distributed on the bone in a better way by double interlocking bolts. In case of the tibia the initial compression can be used about 1500 N. The obtained distance of compression is less than 1 mm. On one hand we explain the benefit of double interlocking and the importance of their positioning, on the other hand the risk of loss of compression by plastic working of the bone stock.
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24 human cadaver tibias were studied on varies parameters (index of cortical bone, bone density, histomorphometric measurement of bone sections). These characters were compared with the biomechanical results, which were gathered by testing the tibias in 3 groups. With using a new developed bone-nail-system we examined simply and double interlocked bones under axial loading by 5000 N. The position of the interlocking screws placed in the bone has a significant influence on the maximal received st...
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