Examination of Properties of Bioabsorbable Osteosynthetic Material Using Finite Element Method

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  • Kawamoto Tomoaki
    Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine and Dentistry
  • Sugahara Toshio
    Department of Oral and Maxillofacial Reconstructive Surgery, Okayama University Graduate School of Medicine and Dentistry

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To overcome the disadvantages of metallic osteosynthetic devices that should remove after the operation, bioabsorbable, ultra high strength poly-L-lactid osteosynthetic devices were developed, and have been applied to the treatment of bone fractures[1.5.6]. On the other hand, it is not known how much stress is actually generated on these devices when an external force was added and minor segment was displaced. In order to know the stress distribution generated in the devices, using 3-dimensional-CAD software, we created the solid model of these devices and the blocks, and assembled these parts just as the two blocks were fixed with these devices. We simulated of fixed one block in the two blocks, and moved a constant amount in four directions to the other block, and analyzed the stress generated in these devices using 3-dimensional stress analysis software. In these simulations, the biggest stress was generated when the plate was tensiled.

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