Mom is developing bad pressure sores on her bottom. We have tried everything: various zinc oxide creams, gabapentin, seen dermatologist and gastroenterologist. All doctors say to move more, get up and walk often, sleep on her side. Mom is 108 yrs old, and mobility is becoming an issue. Just gathering the energy to get out of her chair is hard, and she can only stand or walk for short times...minutes. Sleeping on her side is difficult, as it puts pressure on her old hip replacement, causing discomfort. She is in constant pain (primary doc terms it "chronic idiopathic anal pain", and admits there is no cure. Has anyone used a Roho cushion for this? It was recommended by one doc, but they are pretty expensive, about $400. Any suggestions?