wanderingchana- The definition of a pt. with bedsore(s) is that the pt. was neglected. My only question is was your grandmother bedridden or not. If she was, perhaps she had the ulcer at home?
An aunt who has worked in a nursing home for decades said, "once (bedsores) get that big, they don't recover" and she was right
Actually, she’s wrong; nowadays we have ways to treat these. Nursing homes that have pt’s with bedsores are bad because they are negligent in pt. care. Try to avoid putting your loved ones in these types.