What is the correct understanding of pressure applied to the skin and its effects?

The correct understanding of pressure applied to the skin is that the greatest amount of pressure occurs at the bone/tissue interface. This is due to the anatomy of the body, where bony prominences—such as the sacrum, heels, and elbows—are in direct contact with the underlying tissues. When external pressure is exerted on these areas, it can lead to decreased blood flow, impairing oxygen and nutrient delivery to the tissues. This can result in tissue ischemia and breakdown, contributing to the formation of pressure injuries.

Understanding this concept is crucial in wound care and prevention strategies. It emphasizes the importance of regular repositioning and proper support surfaces to alleviate pressure on these vulnerable areas, ultimately promoting better tissue health and preventing injuries.