Abstract
Abstract Although osteosynthesis plates rarely break, such cases still occur. Since the construction of these plates is mainly focussing on the best fit for anatomical structures, they may not provide optimal mechanical stability. It should be considered whether they might be changed in terms of e.g. hole size and number. Finite element analysis can help to estimate whether the plates will withstand loads or break. However, these analyses can be very time-consuming. To counteract this problem, a new software solution (ANSYS Discovery Live) has been established for estimation of stresses in real time. In this study the accuracy of the new software was compared to a conventional finite element analysis software solution to investigate whether this software solution provides appropriate accuracy to be used for medical applications.
Highlights
Breakage of osteosynthesis plates can lead to complicated follow-up surgeries
Live are very similar to the results of ANSYS Workbench, the maximum stress should not be used as an indication for critical breakage values
Geometries can be edited to reinforce high stress areas. This comparing study has certain limitations: There is no possibility to check the number and types of elements nor the mesh quality. This can lead to calculation problems if complex geometries are calculated
Summary
Breakage of osteosynthesis plates can lead to complicated follow-up surgeries The reasons for such rarely occurring events are varying. Besides calculating stresses and deformations of anatomical structures like bones and joints new implant designs are routinely assessed by using FEA. Even though those analyses can help to reduce development processes, the procedure can be time-consuming as well, e.g. because of remodelling, remeshing and recalculating. A new promising approach is ANSYS Discovery Live (ANSYS, Inc., Canonsburg, Pennsylvania, US) which is an innovative real-time FE-solution to assess stresses, displacements or other mechanical parameters under conditions of varying geometries and boundaries without the need of meshing tools. The maximum von Mises stress, the stress contour and the maximum deformation were calculated for comparison of these two software solutions
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