The median sternotomy has become the desired incision in the modern era of cardiac surgery. The objective of this study is to investigate the sternum loading due to daily forces after sternotomy and during healing. Two models of thorax were built. The first is to simulate the healthy thorax and the second is to simulate the thorax after sternotomy and got closure using stainless steel stitches. In this paper, ANSYS was used to build the throax model. The results that have been collected after solving the model were analyzed. The analysis was promising and proved that the model was working properly and its ability to simulation what happens in the real life.

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