Bedsore cases usually arise in nursing homes. They can be very painful. The occur from inadequate turning, inadequate nutrition and other factors. Usually they occur from short staffing and cost cutting. Sometimes they cannot be avoided. Below are some great sites for investigating these claims.
http://www.medicare.gov/NHCompare/Include/DataSection/Questions/ProximitySearch.asp?PrevPage=%3C Previous Step (enter bed sores in search area)