I have thankfully never needed to treat bedsores personally. My Peace Corps medical guide from back in the day said to fill bedsores with honey, or in the absence of honey with sugar paste.
Weeds are just plants with enough surplus will to live to withstand normal levels of gardening!--Alexandra Petri
Does this tiny ad smell okay to you?
permaculture thorns, A Book About Trying to Build Permaculture Community - draft eBook