Abstract
This paper aims at finding the initial trigger of pressure ulcers. The fibril tissue damage was one assumption that might cause pressure ulcers. It was then modeled as interface crack between bone and muscle. A manual mesh was created for this research in order to get a more accurate result at the interface between the muscle and the bone. To discuss the possibility of fibril tissue breakage, the interface strain/stress was calculated in the local coordinate system of a normal and tangential direction along the curved interface. The interface of the muscle and bone are then analyzed to see the effect given by fiber breakage. The results of the analysis show that fibril tissue at the interface between bone and muscle gave significant effect locally but not globally.
