Coursename Pressure ulcers are damaged areas of the skin, which develop due to the long-term effect of pressure or friction in the areas where the bone is close to the skin, such as heels, sacrum, ischial tuberosity, lateral malleoli and greater trochanters. The epidemiology of pressure ulcers proves that today, despite the profound understanding of them, pressure ulcers are still a serious global health care problem, which affects millions of people worldwide. For example, in the US every year more than 2.5 million people suffer from the pressure ulcers (Cuddigan, Berlowitz, and Ayello 208-215). In 2013 pressure ulcers caused ...