When I was researching the literature on two-hourly repositioning, studying the scientific papers, learning how pressure ulcers developed, searching for solutions to prevent pressure ulcers, I decided to find out what happens when we reposition patients; specifically, what transpires deep in the body tissues, unseen.

Knowing how to prevent pressure ulcers it became imperative to learn what happens when patients are repositioned every two hours.

Sharp CA and McLaws M-L. A discourse on pressure ulcer physiology: the implications of repositioning and staging. http://www.worldwidewounds.com/2005 /october /Sharp/Discourse-On-Pressure-Ulcer-Physiology.html